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percent
noun
one
part
of
every
hundred
•
Only
five
percent
of
the
village
homes
have
clean
drinking
water
.
Only
five
percent
of
the
village
homes
have
clean
drinking
water
.
•
The
survey
showed
that
sixty
percent
of
students
prefer
online
classes
.
The
survey
showed
that
sixty
percent
of
students
prefer
online
classes
.
adverb
for
or
by
every
hundred
in
the
stated
amount
•
House
prices
rose
ten
percent
in
just
a
year
.
House
prices
rose
ten
percent
in
just
a
year
.
•
Our
profits
jumped
twenty-five
percent
after
the
campaign
.
Our
profits
jumped
twenty-five
percent
after
the
campaign
.
per cent
noun
one
part
of
every
hundred
•
About
thirty
per
cent
of
the
land
is
covered
by
forest
.
About
thirty
per cent
of
the
land
is
covered
by
forest
.
•
Only
two
per
cent
of
the
applicants
were
accepted
.
Only
two
per cent
of
the
applicants
were
accepted
.
adverb
for
or
by
every
hundred
in
the
stated
amount
•
Inflation
rose
three
per
cent
last
month
.
Inflation
rose
three
per cent
last
month
.
•
The
charity
cut
its
administrative
costs
by
fifteen
per
cent
.
The
charity
cut
its
administrative
costs
by
fifteen
per cent
.
person
noun
-
person
,
people
a
human
being
,
considered
as
an
individual
•
Only
one
person
can
sit
in
the
front
seat
at
a
time
.
Only
one
person
can
sit
in
the
front
seat
at
a
time
.
•
She
is
the
kindest
person
I
know
.
She
is
the
kindest
person
I
know
.
Middle
English
,
from
Old
French
persone
,
from
Latin
persōna
‘
human
being
,
character
,
mask
’.
noun
a
human
or
organization
that
the
law
considers
to
have
rights
and
responsibilities
•
Under
the
contract
,
a
company
is
treated
as
a
single
person
in
law
.
Under
the
contract
,
a
company
is
treated
as
a
single
person
in
law
.
•
A
minor
cannot
be
considered
a
legal
person
capable
of
signing
the
agreement
.
A
minor
cannot
be
considered
a
legal
person
capable
of
signing
the
agreement
.
Extension
of
the
everyday
sense
;
first
recorded
in
English
legal
texts
in
the
late
14th
century
.
experience
noun
knowledge
or
skill
you
gain
over
time
by
doing
,
seeing
,
or
learning
things
•
Working
abroad
gave
Maria
valuable
experience
in
international
marketing
.
Working
abroad
gave
Maria
valuable
experience
in
international
marketing
.
•
You
need
at
least
two
years
of
teaching
experience
for
this
job
.
You
need
at
least
two
years
of
teaching
experience
for
this
job
.
noun
a
particular
event
or
situation
that
happens
to
you
and
affects
how
you
feel
or
think
•
Riding
a
roller
coaster
was
an
exciting
experience
for
the
children
.
Riding
a
roller
coaster
was
an
exciting
experience
for
the
children
.
•
His
first
day
at
college
turned
out
to
be
an
overwhelming
experience
.
His
first
day
at
college
turned
out
to
be
an
overwhelming
experience
.
noun
knowledge
or
practical
skill
that
you
get
by
doing
a
job
,
activity
,
or
living
through
events
•
Working
part-time
in
the
café
gave
Lily
valuable
experience
in
dealing
with
customers
.
Working
part-time
in
the
café
gave
Lily
valuable
experience
in
dealing
with
customers
.
•
You
need
hands-on
experience
before
you
can
repair
a
car
engine
confidently
.
You
need
hands-on
experience
before
you
can
repair
a
car
engine
confidently
.
noun
an
event
or
situation
that
happens
to
you
and
that
you
remember
because
it
is
interesting
or
unusual
•
Riding
a
roller
coaster
for
the
first
time
was
an
unforgettable
experience
.
Riding
a
roller
coaster
for
the
first
time
was
an
unforgettable
experience
.
•
The
concert
was
the
best
experience
of
my
life
.
The
concert
was
the
best
experience
of
my
life
.
verb
-
experience
,
experiencing
,
experiences
,
experienced
to
feel
,
live
through
,
or
undergo
something
•
Tourists
can
experience
local
culture
by
staying
with
host
families
.
Tourists
can
experience
local
culture
by
staying
with
host
families
.
•
She
experienced
a
sudden
burst
of
joy
when
she
saw
the
puppy
.
She
experienced
a
sudden
burst
of
joy
when
she
saw
the
puppy
.
verb
-
experience
,
experiencing
,
experiences
,
experienced
to
have
something
happen
to
you
or
to
feel
something
yourself
•
Many
tourists
want
to
experience
the
city's
famous
night
markets
.
Many
tourists
want
to
experience
the
city's
famous
night
markets
.
•
During
the
eclipse
,
we
experienced
complete
darkness
at
noon
.
During
the
eclipse
,
we
experienced
complete
darkness
at
noon
.
perhaps
adverb
used
to
express
that
something
might
be
true
or
might
happen
,
but
you
are
not
certain
•
Perhaps
it
will
stop
raining
by
afternoon
,
and
we
can
have
the
picnic
.
Perhaps
it
will
stop
raining
by
afternoon
,
and
we
can
have
the
picnic
.
•
She
hasn't
arrived
yet
—
Perhaps
she
missed
the
bus
.
She
hasn't
arrived
yet
—
Perhaps
she
missed
the
bus
.
Middle
English
peraventure
and
perhap
(
en
)
were
blended
into
perhaps
in
the
16th
century
,
from
Anglo-French
per
aventure
“
by
chance
.”
adverb
used
to
make
a
suggestion
or
request
in
a
polite
,
gentle
way
•
Perhaps
you
could
close
the
window
;
it's
getting
cold
in
here
.
Perhaps
you
could
close
the
window
;
it's
getting
cold
in
here
.
•
Perhaps
we
should
take
a
break
and
have
some
coffee
.
Perhaps
we
should
take
a
break
and
have
some
coffee
.
personal
adjective
belonging
to
or
connected
with
one
particular
person
,
not
shared
with
others
•
Please
remove
any
personal
belongings
from
the
classroom
before
you
leave
.
Please
remove
any
personal
belongings
from
the
classroom
before
you
leave
.
•
I
keep
my
personal
files
on
a
password-protected
laptop
.
I
keep
my
personal
files
on
a
password-protected
laptop
.
From
Middle
English
personal
,
from
Old
French
personel
,
from
Latin
personalis
(“
pertaining
to
a
person
”).
adjective
related
to
someone
’
s
private
life
and
feelings
rather
than
to
their
work
or
public
position
•
I
’
d
rather
not
answer
such
personal
questions
.
I
’
d
rather
not
answer
such
personal
questions
.
•
She
never
talks
about
her
personal
life
at
work
.
She
never
talks
about
her
personal
life
at
work
.
adjective
given
directly
by
a
particular
person
rather
than
by
a
machine
or
an
organisation
•
The
teacher
gives
each
child
personal
attention
.
The
teacher
gives
each
child
personal
attention
.
•
I
prefer
a
personal
tour
guide
instead
of
an
audio
headset
.
I
prefer
a
personal
tour
guide
instead
of
an
audio
headset
.
adjective
(
of
remarks
or
attacks
)
aimed
at
someone
as
an
individual
and
likely
to
offend
•
Don
’
t
get
personal
—
we
’
re
only
discussing
the
proposal
.
Don
’
t
get
personal
—
we
’
re
only
discussing
the
proposal
.
•
His
comments
became
personal
and
hurtful
.
His
comments
became
personal
and
hurtful
.
noun
a
short
advertisement
in
which
someone
looks
for
friendship
,
romance
,
or
other
personal
contact
,
especially
in
a
newspaper
or
online
•
He
met
his
wife
after
answering
a
personal
in
the
Sunday
paper
.
He
met
his
wife
after
answering
a
personal
in
the
Sunday
paper
.
•
She
placed
a
personal
to
find
a
hiking
partner
.
She
placed
a
personal
to
find
a
hiking
partner
.
paper
noun
a
thin
,
flat
material
made
mainly
from
wood
pulp
that
is
used
for
writing
,
printing
,
drawing
,
or
wrapping
things
•
Maria
folded
the
colored
paper
into
a
small
crane
.
Maria
folded
the
colored
paper
into
a
small
crane
.
•
Please
recycle
the
scrap
paper
after
you
finish
your
notes
.
Please
recycle
the
scrap
paper
after
you
finish
your
notes
.
From
Middle
English
papere
,
from
Old
French
papier
,
from
Latin
papȳrus
“
papyrus
,
writing
material
used
in
antiquity
”.
noun
a
newspaper
•
Grandpa
still
buys
the
Sunday
paper
and
reads
it
over
breakfast
.
Grandpa
still
buys
the
Sunday
paper
and
reads
it
over
breakfast
.
•
The
local
paper
printed
a
photo
of
our
school
play
on
the
front
page
.
The
local
paper
printed
a
photo
of
our
school
play
on
the
front
page
.
noun
an
academic
essay
,
report
,
or
article
that
presents
research
or
ideas
,
especially
one
published
in
a
journal
or
delivered
at
a
conference
•
Dr
.
Lee
’
s
paper
on
renewable
energy
won
an
award
.
Dr
.
Lee
’
s
paper
on
renewable
energy
won
an
award
.
•
We
have
to
write
a
ten-page
research
paper
for
biology
class
.
We
have
to
write
a
ten-page
research
paper
for
biology
class
.
noun
a
written
examination
that
students
must
take
•
I
finished
the
maths
paper
with
ten
minutes
to
spare
.
I
finished
the
maths
paper
with
ten
minutes
to
spare
.
•
Tomorrow
we
sit
our
English
paper
at
nine
o
’
clock
.
Tomorrow
we
sit
our
English
paper
at
nine
o
’
clock
.
verb
to
cover
a
wall
or
surface
with
wallpaper
or
sheets
of
paper
•
They
decided
to
paper
the
nursery
with
bright
animal
print
wallpaper
.
They
decided
to
paper
the
nursery
with
bright
animal
print
wallpaper
.
•
The
landlord
papered
the
living
room
last
summer
.
The
landlord
papered
the
living
room
last
summer
.
adjective
existing
in
theory
or
in
written
form
but
not
in
reality
•
The
two
countries
signed
a
paper
agreement
that
was
never
enforced
.
The
two
countries
signed
a
paper
agreement
that
was
never
enforced
.
•
His
company
’
s
huge
profits
were
only
paper
gains
before
the
market
crash
.
His
company
’
s
huge
profits
were
only
paper
gains
before
the
market
crash
.
papers
noun
official
documents
that
prove
a
person
’
s
identity
,
ownership
,
or
legal
status
•
The
border
guard
asked
to
see
our
papers
before
letting
us
pass
.
The
border
guard
asked
to
see
our
papers
before
letting
us
pass
.
•
Keep
your
car
papers
in
the
glove
compartment
at
all
times
.
Keep
your
car
papers
in
the
glove
compartment
at
all
times
.
property
noun
-
property
,
properties
something
that
a
person
or
organization
owns
and
has
the
legal
right
to
use
,
keep
,
or
sell
•
A
burglar
was
caught
carrying
bags
of
stolen
property
down
the
street
.
A
burglar
was
caught
carrying
bags
of
stolen
property
down
the
street
.
•
Please
do
not
touch
other
people's
property
without
permission
.
Please
do
not
touch
other
people's
property
without
permission
.
From
Middle
English
propretee
,
from
Old
French
propriete
,
from
Latin
proprietas
“
ownership
,
peculiarity
,”
from
proprius
“
one
’
s
own
.”
noun
-
property
,
properties
land
and
the
buildings
on
it
,
considered
as
real
estate
•
They
bought
a
lakeside
property
as
a
vacation
home
.
They
bought
a
lakeside
property
as
a
vacation
home
.
•
The
agent
showed
us
several
properties
in
the
city
center
.
The
agent
showed
us
several
properties
in
the
city
center
.
noun
-
property
,
properties
a
quality
or
characteristic
that
something
has
•
One
useful
property
of
copper
is
that
it
conducts
electricity
well
.
One
useful
property
of
copper
is
that
it
conducts
electricity
well
.
•
Flexibility
is
an
important
property
of
good
leather
.
Flexibility
is
an
important
property
of
good
leather
.
noun
-
property
,
properties
an
object
used
by
actors
on
stage
or
in
a
film
,
also
called
a
prop
•
The
sword
on
stage
is
only
a
property
,
not
a
real
weapon
.
The
sword
on
stage
is
only
a
property
,
not
a
real
weapon
.
•
Stagehands
set
every
property
in
place
before
the
curtain
rose
.
Stagehands
set
every
property
in
place
before
the
curtain
rose
.
noun
-
property
,
properties
a
named
value
or
attribute
that
stores
information
about
an
object
or
element
in
computer
programs
or
digital
documents
•
Change
the
backgroundColor
property
to
blue
in
the
code
.
Change
the
backgroundColor
property
to
blue
in
the
code
.
•
Each
user
object
has
a
name
property
and
an
ID
number
.
Each
user
object
has
a
name
property
and
an
ID
number
.
period
noun
the
small
dot
(.)
used
at
the
end
of
a
sentence
in
American
English
•
Remember
to
put
a
period
after
every
statement
in
your
essay
.
Remember
to
put
a
period
after
every
statement
in
your
essay
.
•
The
teacher
wrote
a
sentence
on
the
board
and
asked
, “
What
punctuation
mark
is
missing
?”
Everyone
shouted
, “
A
period
!”
The
teacher
wrote
a
sentence
on
the
board
and
asked
, “
What
punctuation
mark
is
missing
?”
Everyone
shouted
, “
A
period
!”
Borrowed
into
English
from
Middle
French
periode
and
Latin
periodus
,
originally
from
Ancient
Greek
períodoς
meaning
“
circuit
”
or
“
cycle
.”
noun
a
length
of
time
that
has
a
clear
beginning
and
end
•
The
dinosaurs
lived
millions
of
years
ago
during
the
Jurassic
Period
.
The
dinosaurs
lived
millions
of
years
ago
during
the
Jurassic
Period
.
•
There
will
be
a
quiet
period
for
questions
at
the
end
of
the
talk
.
There
will
be
a
quiet
period
for
questions
at
the
end
of
the
talk
.
noun
one
class
time
slot
in
a
school
schedule
•
Math
is
my
first
period
on
Mondays
.
Math
is
my
first
period
on
Mondays
.
•
After
lunch
we
have
a
free
period
,
so
I
usually
read
in
the
library
.
After
lunch
we
have
a
free
period
,
so
I
usually
read
in
the
library
.
noun
one
of
the
fixed
segments
of
play
in
certain
sports
such
as
ice
hockey
or
basketball
•
The
team
scored
twice
in
the
first
period
.
The
team
scored
twice
in
the
first
period
.
•
The
coach
told
them
to
conserve
energy
for
the
final
period
.
The
coach
told
them
to
conserve
energy
for
the
final
period
.
interjection
used
at
the
end
of
a
statement
to
show
that
nothing
more
will
be
said
or
accepted
on
the
matter
•
I
’
m
not
lending
you
my
bike
again
,
period
!
I
’
m
not
lending
you
my
bike
again
,
period
!
•
We
are
going
to
Grandma
’
s
for
the
holidays
,
period
.
We
are
going
to
Grandma
’
s
for
the
holidays
,
period
.
noun
the
monthly
flow
of
blood
experienced
by
women
and
girls
as
part
of
the
menstrual
cycle
•
She
always
keeps
pain
relievers
in
her
bag
in
case
her
period
starts
while
she
’
s
at
school
.
She
always
keeps
pain
relievers
in
her
bag
in
case
her
period
starts
while
she
’
s
at
school
.
•
During
her
period
,
she
prefers
to
use
a
heat
pad
to
ease
cramps
.
During
her
period
,
she
prefers
to
use
a
heat
pad
to
ease
cramps
.
adjective
relating
to
or
typical
of
a
particular
historical
time
,
especially
in
style
or
design
•
The
actors
wore
elaborate
period
costumes
in
the
Shakespeare
play
.
The
actors
wore
elaborate
period
costumes
in
the
Shakespeare
play
.
•
They
restored
the
old
house
with
authentic
period
furniture
.
They
restored
the
old
house
with
authentic
period
furniture
.
perfect
adjective
having
no
mistakes
,
flaws
,
or
weaknesses
;
as
good
as
something
can
be
•
The
sky
was
clear
and
the
weather
was
perfect
for
a
picnic
.
The
sky
was
clear
and
the
weather
was
perfect
for
a
picnic
.
•
Mia
smiled
proudly
when
she
saw
her
perfect
score
on
the
math
test
.
Mia
smiled
proudly
when
she
saw
her
perfect
score
on
the
math
test
.
From
Latin
perfectus
,
past
participle
of
perficere
“
to
complete
,
accomplish
”.
verb
to
make
something
completely
free
from
faults
or
to
improve
it
until
it
is
as
good
as
possible
•
She
practiced
every
day
to
perfect
her
violin
solo
before
the
concert
.
She
practiced
every
day
to
perfect
her
violin
solo
before
the
concert
.
•
Engineers
are
working
to
perfect
a
new
type
of
eco-friendly
battery
.
Engineers
are
working
to
perfect
a
new
type
of
eco-friendly
battery
.
From
the
adjective
perfect
;
verb
use
recorded
since
the
late
14th
century
,
meaning
“
to
bring
to
perfection
”.
noun
a
verb
tense
that
shows
an
action
finished
before
now
or
before
another
stated
time
•
In
the
sentence
“
She
has
eaten
”,
the
verb
is
in
the
perfect
.
In
the
sentence
“
She
has
eaten
”,
the
verb
is
in
the
perfect
.
•
Our
tutor
asked
us
to
change
each
past
tense
verb
into
the
present
perfect
.
Our
tutor
asked
us
to
change
each
past
tense
verb
into
the
present
perfect
.
Adopted
into
grammatical
terminology
in
the
17th
century
,
modelling
Latin
tempus
perfectum
“
completed
time
”.
per
preposition
used
to
express
how
many
units
of
one
thing
exist
for
each
single
unit
of
another
thing
,
showing
a
rate
or
ratio
•
The
speed
limit
on
this
highway
is
100
kilometers
per
hour
.
The
speed
limit
on
this
highway
is
100
kilometers
per
hour
.
•
The
bakery
charges
two
dollars
per
cupcake
.
The
bakery
charges
two
dollars
per
cupcake
.
Borrowed
from
Latin
per
meaning
“
through
,
by
means
of
,
for
each
”.
preposition
according
to
or
following
what
someone
has
said
,
written
,
or
required
•
Per
your
request
,
I
have
updated
the
budget
report
.
Per
your
request
,
I
have
updated
the
budget
report
.
•
We
sorted
the
documents
per
department
guidelines
.
We
sorted
the
documents
per
department
guidelines
.
From
Latin
per
meaning
“
by
,
through
,
according
to
”.
performance
noun
an
act
of
presenting
a
play
,
concert
,
dance
,
or
other
entertainment
for
an
audience
•
The
school's
drama
club
gave
an
impressive
performance
of
“
Hamlet
”
last
night
.
The
school's
drama
club
gave
an
impressive
performance
of
“
Hamlet
”
last
night
.
•
Tickets
for
the
ballet
performance
sold
out
in
minutes
.
Tickets
for
the
ballet
performance
sold
out
in
minutes
.
from
perform
+
-ance
,
first
recorded
in
Middle
English
in
reference
to
carrying
out
an
act
,
later
applied
to
theatrical
shows
noun
-
performance
how
well
a
person
,
group
,
or
organization
does
a
task
or
achieves
results
•
Regular
practice
improved
his
performance
on
the
math
test
.
Regular
practice
improved
his
performance
on
the
math
test
.
•
The
coach
praised
the
team's
performance
in
the
final
.
The
coach
praised
the
team's
performance
in
the
final
.
noun
-
performance
how
well
a
machine
,
vehicle
,
or
system
works
•
Upgrading
the
memory
increased
the
computer's
performance
.
Upgrading
the
memory
increased
the
computer's
performance
.
•
High
temperatures
can
affect
engine
performance
.
High
temperatures
can
affect
engine
performance
.
noun
an
unnecessary
or
exaggerated
display
of
actions
,
often
to
attract
attention
or
show
annoyance
•
He
made
a
big
performance
about
forgetting
his
keys
.
He
made
a
big
performance
about
forgetting
his
keys
.
•
Stop
making
a
performance
—
it's
only
a
small
scratch
.
Stop
making
a
performance
—
it's
only
a
small
scratch
.
expert
noun
someone
who
has
a
lot
of
knowledge
or
skill
in
a
particular
subject
•
The
museum
hired
an
expert
to
authenticate
the
ancient
painting
.
The
museum
hired
an
expert
to
authenticate
the
ancient
painting
.
•
Whenever
my
computer
breaks
,
I
call
my
cousin
because
he's
a
tech
expert
.
Whenever
my
computer
breaks
,
I
call
my
cousin
because
he's
a
tech
expert
.
From
Latin
expertus
,
past
participle
of
experīrī
meaning
‘
to
try
or
test
’.
adjective
having
or
showing
a
lot
of
knowledge
or
skill
•
With
expert
skill
,
Maria
guided
the
raft
through
the
rapids
.
With
expert
skill
,
Maria
guided
the
raft
through
the
rapids
.
•
Jake
gave
me
expert
advice
on
how
to
fix
the
bike
.
Jake
gave
me
expert
advice
on
how
to
fix
the
bike
.
Originally
the
past
participle
of
the
rare
verb
"
expert
"
meaning
"
to
experience
";
now
used
only
as
an
adjective
.
deep
adjective
-
deep
,
deeper
,
deepest
extending
a
long
way
down
from
the
top
,
surface
,
or
edge
toward
the
bottom
or
center
•
The
lake
is
so
deep
that
no
one
has
ever
touched
the
bottom
.
The
lake
is
so
deep
that
no
one
has
ever
touched
the
bottom
.
•
The
miners
dug
a
deep
tunnel
through
the
mountain
.
The
miners
dug
a
deep
tunnel
through
the
mountain
.
adjective
-
deep
,
deeper
,
deepest
extending
a
long
way
down
from
the
top
,
surface
,
or
opening
•
The
lake
is
so
deep
that
you
can
’
t
see
the
bottom
.
The
lake
is
so
deep
that
you
can
’
t
see
the
bottom
.
•
Miners
work
in
a
deep
tunnel
under
the
mountain
.
Miners
work
in
a
deep
tunnel
under
the
mountain
.
adjective
-
deep
,
deeper
,
deepest
very
strong
or
extreme
in
degree
,
feeling
,
or
quality
•
She
felt
deep
sadness
when
her
dog
passed
away
.
She
felt
deep
sadness
when
her
dog
passed
away
.
•
I
have
deep
respect
for
my
grandparents
.
I
have
deep
respect
for
my
grandparents
.
adjective
-
deep
,
deeper
,
deepest
having
a
low
,
full
sound
or
pitch
•
His
voice
is
so
deep
it
sounds
like
thunder
.
His
voice
is
so
deep
it
sounds
like
thunder
.
•
The
singer
hit
a
deep
note
at
the
end
of
the
song
.
The
singer
hit
a
deep
note
at
the
end
of
the
song
.
adverb
-
deep
,
deeper
,
deepest
far
below
a
surface
,
or
far
inside
a
place
or
thing
•
The
treasure
is
buried
deep
underground
.
The
treasure
is
buried
deep
underground
.
•
The
tunnel
runs
deep
into
the
mountain
.
The
tunnel
runs
deep
into
the
mountain
.
adjective
-
deep
,
deeper
,
deepest
showing
or
involving
great
seriousness
,
intensity
,
or
emotion
•
He
has
a
deep
love
for
his
family
.
He
has
a
deep
love
for
his
family
.
•
They
sat
in
deep
silence
after
hearing
the
news
.
They
sat
in
deep
silence
after
hearing
the
news
.
adjective
-
deep
,
deeper
,
deepest
low
in
pitch
or
sound
•
The
actor
’
s
deep
voice
filled
the
theater
.
The
actor
’
s
deep
voice
filled
the
theater
.
•
Thunder
rumbled
in
a
deep
growl
above
us
.
Thunder
rumbled
in
a
deep
growl
above
us
.
adjective
-
deep
,
deeper
,
deepest
rich
and
dark
in
color
•
She
painted
the
wall
a
deep
blue
.
She
painted
the
wall
a
deep
blue
.
•
The
sunset
glowed
with
deep
oranges
and
reds
.
The
sunset
glowed
with
deep
oranges
and
reds
.
adverb
-
deep
,
deeper
,
deepest
a
long
way
into
,
below
,
or
inside
something
•
The
treasure
is
buried
deep
under
the
old
oak
tree
.
The
treasure
is
buried
deep
under
the
old
oak
tree
.
•
They
walked
deep
into
the
forest
before
setting
up
camp
.
They
walked
deep
into
the
forest
before
setting
up
camp
.
adjective
-
deep
,
deeper
,
deepest
far
into
the
middle
or
later
part
of
a
period
of
time
•
It
was
deep
winter
and
the
river
was
frozen
solid
.
It
was
deep
winter
and
the
river
was
frozen
solid
.
•
We
talked
until
deep
into
the
night
.
We
talked
until
deep
into
the
night
.
operation
noun
the
way
a
machine
,
system
,
or
process
works
and
is
used
•
The
new
washing
machine
runs
quietly
during
its
operation
.
The
new
washing
machine
runs
quietly
during
its
operation
.
•
Engineers
watched
computer
screens
to
track
the
bridge
’
s
operation
on
a
windy
day
.
Engineers
watched
computer
screens
to
track
the
bridge
’
s
operation
on
a
windy
day
.
noun
a
business
or
organized
activity
that
produces
goods
or
provides
services
•
Her
cupcake
shop
started
as
a
small
home
operation
and
grew
into
three
busy
stores
.
Her
cupcake
shop
started
as
a
small
home
operation
and
grew
into
three
busy
stores
.
•
The
mining
operation
employs
hundreds
of
workers
in
the
desert
.
The
mining
operation
employs
hundreds
of
workers
in
the
desert
.
noun
a
medical
procedure
in
which
doctors
cut
into
the
body
to
treat
or
fix
something
•
The
heart
operation
lasted
four
hours
and
was
a
success
.
The
heart
operation
lasted
four
hours
and
was
a
success
.
•
After
her
knee
operation
,
she
used
crutches
for
two
weeks
.
After
her
knee
operation
,
she
used
crutches
for
two
weeks
.
noun
a
process
such
as
addition
,
subtraction
,
multiplication
,
or
division
that
changes
numbers
or
amounts
•
Multiplication
is
a
faster
operation
than
repeated
addition
.
Multiplication
is
a
faster
operation
than
repeated
addition
.
•
The
calculator
can
perform
every
basic
operation
.
The
calculator
can
perform
every
basic
operation
.
noun
a
planned
military
,
police
,
or
rescue
action
•
The
rescue
operation
saved
the
sailors
from
the
sinking
ship
.
The
rescue
operation
saved
the
sailors
from
the
sinking
ship
.
•
Police
launched
an
undercover
operation
to
catch
the
smugglers
.
Police
launched
an
undercover
operation
to
catch
the
smugglers
.
noun
an
action
or
command
that
a
computer
or
machine
carries
out
on
data
•
Copying
a
file
is
a
simple
operation
in
most
operating
systems
.
Copying
a
file
is
a
simple
operation
in
most
operating
systems
.
•
The
robot
repeated
the
sorting
operation
thousands
of
times
without
error
.
The
robot
repeated
the
sorting
operation
thousands
of
times
without
error
.
perform
verb
to
carry
out
or
complete
an
action
,
duty
,
or
piece
of
work
•
The
engineer
will
perform
safety
checks
before
the
machine
starts
.
The
engineer
will
perform
safety
checks
before
the
machine
starts
.
•
Students
must
perform
all
the
experiments
listed
in
the
lab
manual
.
Students
must
perform
all
the
experiments
listed
in
the
lab
manual
.
From
Middle
English
performen
,
borrowed
from
Anglo-French
parfourmer
,
from
par-
“
completely
”
+
fourmer
“
to
form
.”
verb
to
entertain
an
audience
by
acting
,
singing
,
playing
music
,
or
doing
another
art
live
•
The
band
will
perform
on
the
main
stage
at
8
p
.
m
.
The
band
will
perform
on
the
main
stage
at
8
p
.
m
.
•
She
loves
to
perform
in
school
plays
.
She
loves
to
perform
in
school
plays
.
verb
to
operate
or
function
in
a
particular
way
,
especially
showing
how
well
something
works
•
The
new
smartphone
performs
better
than
the
older
model
.
The
new
smartphone
performs
better
than
the
older
model
.
•
After
months
of
training
,
the
athlete
performed
impressively
in
the
marathon
.
After
months
of
training
,
the
athlete
performed
impressively
in
the
marathon
.
perspective
noun
a
particular
way
of
thinking
about
or
understanding
something
•
From
her
perspective
,
the
plan
made
perfect
sense
.
From
her
perspective
,
the
plan
made
perfect
sense
.
•
Traveling
abroad
can
change
your
perspective
on
life
.
Traveling
abroad
can
change
your
perspective
on
life
.
Late
Middle
English
from
Latin
perspectiva
(
ars
) ‘
science
of
optics
’,
from
perspicere
‘
to
see
through
’.
noun
a
reasonable
sense
of
how
important
something
is
compared
with
other
things
•
Losing
one
match
isn
’
t
the
end
of
the
world
—
keep
things
in
perspective
.
Losing
one
match
isn
’
t
the
end
of
the
world
—
keep
things
in
perspective
.
•
Talking
to
her
grandmother
gave
her
valuable
perspective
on
her
troubles
.
Talking
to
her
grandmother
gave
her
valuable
perspective
on
her
troubles
.
noun
the
art
or
technique
of
representing
depth
and
distance
on
a
flat
surface
by
making
objects
appear
smaller
as
they
recede
•
The
artist
used
linear
perspective
to
make
the
street
look
realistic
.
The
artist
used
linear
perspective
to
make
the
street
look
realistic
.
•
In
art
class
we
practiced
one-point
perspective
.
In
art
class
we
practiced
one-point
perspective
.
noun
a
view
,
especially
one
seen
from
a
particular
place
•
From
the
hilltop
,
we
had
a
breathtaking
perspective
of
the
valley
.
From
the
hilltop
,
we
had
a
breathtaking
perspective
of
the
valley
.
•
The
hotel
room
offered
a
unique
perspective
over
the
harbour
.
The
hotel
room
offered
a
unique
perspective
over
the
harbour
.
newspaper
noun
a
printed
publication
,
usually
issued
daily
or
weekly
,
that
contains
news
,
articles
,
photographs
,
and
advertisements
•
She
buys
a
newspaper
every
morning
on
her
way
to
work
.
She
buys
a
newspaper
every
morning
on
her
way
to
work
.
•
The
headline
on
the
front
of
the
newspaper
surprised
everyone
.
The
headline
on
the
front
of
the
newspaper
surprised
everyone
.
mid-17th
century
,
from
the
words
“
news
”
+
“
paper
”,
originally
meaning
‘
a
printed
sheet
giving
news
’.
noun
a
company
or
organization
that
produces
and
distributes
a
newspaper
publication
•
The
newspaper
hired
a
new
editor
last
month
.
The
newspaper
hired
a
new
editor
last
month
.
•
Our
local
newspaper
won
an
award
for
investigative
journalism
.
Our
local
newspaper
won
an
award
for
investigative
journalism
.
noun
-
newspaper
old
sheets
of
newsprint
used
as
a
material
for
wrapping
,
cleaning
,
or
other
practical
purposes
•
He
wrapped
the
dishes
in
newspaper
before
packing
them
.
He
wrapped
the
dishes
in
newspaper
before
packing
them
.
•
The
wet
dog
lay
on
a
sheet
of
newspaper
to
keep
the
floor
clean
.
The
wet
dog
lay
on
a
sheet
of
newspaper
to
keep
the
floor
clean
.
temperature
noun
how
hot
or
cold
something
is
,
measured
with
a
scale
such
as
degrees
Celsius
or
Fahrenheit
•
The
temperature
dropped
below
freezing
overnight
.
The
temperature
dropped
below
freezing
overnight
.
•
Set
the
oven
to
a
temperature
of
200
degrees
Celsius
before
you
put
in
the
bread
.
Set
the
oven
to
a
temperature
of
200
degrees
Celsius
before
you
put
in
the
bread
.
From
Latin
temperatūra
“
moderation
,
mixture
,
proper
proportion
,”
later
“
degree
of
heat
,”
from
temperāre
“
to
mix
in
proper
proportion
.”
noun
the
level
of
heat
in
a
person
’
s
or
animal
’
s
body
,
used
to
see
if
they
have
a
fever
•
The
nurse
took
my
temperature
with
an
ear
thermometer
.
The
nurse
took
my
temperature
with
an
ear
thermometer
.
•
If
your
temperature
is
above
38
°C
,
you
should
rest
and
drink
plenty
of
water
.
If
your
temperature
is
above
38
°C
,
you
should
rest
and
drink
plenty
of
water
.
Same
origin
as
general
sense
;
use
in
medicine
recorded
since
the
mid-18th
century
.
noun
the
general
level
of
emotion
,
tension
,
or
excitement
in
a
situation
or
group
•
The
moderator
’
s
calm
voice
lowered
the
temperature
of
the
heated
debate
.
The
moderator
’
s
calm
voice
lowered
the
temperature
of
the
heated
debate
.
•
Managers
use
surveys
to
take
the
temperature
of
employee
morale
.
Managers
use
surveys
to
take
the
temperature
of
employee
morale
.
Figurative
extension
recorded
since
the
early
20th
century
,
comparing
social
mood
to
heat
.
operate
verb
-
operate
,
operating
,
operates
,
operated
(
of
a
machine
or
system
)
to
work
or
function
in
the
way
it
was
designed
•
You
must
fix
the
wiring
before
the
elevator
can
operate
again
.
You
must
fix
the
wiring
before
the
elevator
can
operate
again
.
•
My
old
wristwatch
still
operates
perfectly
after
twenty
years
.
My
old
wristwatch
still
operates
perfectly
after
twenty
years
.
verb
-
operate
,
operating
,
operates
,
operated
to
control
or
use
a
machine
,
device
,
or
piece
of
equipment
•
Only
trained
pilots
are
allowed
to
operate
the
aircraft
.
Only
trained
pilots
are
allowed
to
operate
the
aircraft
.
•
She
learned
to
operate
the
3D
printer
in
one
afternoon
.
She
learned
to
operate
the
3D
printer
in
one
afternoon
.
verb
-
operate
,
operating
,
operates
,
operated
(
of
a
person
,
company
,
or
service
)
to
carry
out
business
or
be
active
,
especially
in
a
particular
place
or
way
•
The
bakery
will
operate
seven
days
a
week
during
the
holidays
.
The
bakery
will
operate
seven
days
a
week
during
the
holidays
.
•
They
operate
mainly
in
South
America
and
Asia
.
They
operate
mainly
in
South
America
and
Asia
.
verb
-
operate
,
operating
,
operates
,
operated
to
perform
surgery
on
someone
•
The
surgeon
will
operate
on
the
patient
at
noon
.
The
surgeon
will
operate
on
the
patient
at
noon
.
•
Doctors
had
to
operate
immediately
to
stop
the
bleeding
.
Doctors
had
to
operate
immediately
to
stop
the
bleeding
.
verb
-
operate
,
operating
,
operates
,
operated
(
of
a
law
,
rule
,
or
force
)
to
have
an
effect
or
exert
influence
•
The
new
law
will
operate
to
protect
tenants
from
unfair
rent
increases
.
The
new
law
will
operate
to
protect
tenants
from
unfair
rent
increases
.
•
In
zero
gravity
,
different
physical
laws
operate
.
In
zero
gravity
,
different
physical
laws
operate
.
cheap
adjective
-
cheap
,
cheaper
,
cheapest
costing
little
money
compared
with
similar
things
•
We
found
a
cheap
hotel
near
the
city
center
.
We
found
a
cheap
hotel
near
the
city
center
.
•
Those
apples
are
cheap
at
the
farmers
’
market
today
.
Those
apples
are
cheap
at
the
farmers
’
market
today
.
From
Old
English
“
céap
”
meaning
‘
trade
,
bargain
’
which
gradually
developed
the
idea
of
low
price
.
score
noun
-
score
,
scoring
,
scores
,
scored
,
superlative
the
number
of
points
,
goals
,
or
marks
that
shows
how
well
someone
is
doing
in
a
game
,
test
,
or
competition
•
The
final
score
was
3–2
to
the
home
team
.
The
final
score
was
3–2
to
the
home
team
.
•
Keep
an
eye
on
the
score
while
I
grab
some
snacks
.
Keep
an
eye
on
the
score
while
I
grab
some
snacks
.
From
Old
Norse
‘
skor
’,
meaning
a
notch
or
tally
,
originally
referring
to
marks
cut
to
keep
a
count
.
percentage
noun
an
amount
or
share
of
something
,
shown
as
parts
out
of
one
hundred
•
A
high
percentage
of
the
class
passed
the
exam
with
flying
colors
.
A
high
percentage
of
the
class
passed
the
exam
with
flying
colors
.
•
What
percentage
of
your
income
do
you
spend
on
rent
each
month
?
What
percentage
of
your
income
do
you
spend
on
rent
each
month
?
noun
a
sum
of
money
paid
to
someone
,
calculated
as
a
part
of
the
total
amount
they
helped
to
earn
•
The
agent
earns
a
percentage
of
every
house
she
sells
.
The
agent
earns
a
percentage
of
every
house
she
sells
.
•
He
gets
a
small
percentage
for
brokering
the
deal
.
He
gets
a
small
percentage
for
brokering
the
deal
.
noun
informal
:
the
benefit
or
profit
that
someone
can
get
from
doing
something
•
There's
no
percentage
in
staying
up
all
night
if
the
work
can
wait
.
There's
no
percentage
in
staying
up
all
night
if
the
work
can
wait
.
•
He
wondered
what
the
percentage
was
in
lying
to
his
friends
.
He
wondered
what
the
percentage
was
in
lying
to
his
friends
.
super
adjective
excellent
;
extremely
good
or
pleasing
.
•
The
kids
thought
the
roller
coaster
was
super
fun
.
The
kids
thought
the
roller
coaster
was
super
fun
.
•
You
did
a
super
job
cleaning
your
room
.
You
did
a
super
job
cleaning
your
room
.
Shortened
form
of
“
superior
”
in
early
19th-century
American
English
,
later
popularized
in
advertising
slogans
of
the
1920s
.
adverb
to
a
very
large
degree
;
extremely
.
•
It
was
super
cold
this
morning
,
so
I
wore
two
jackets
.
It
was
super
cold
this
morning
,
so
I
wore
two
jackets
.
•
I'm
super
excited
about
the
concert
tonight
!
I'm
super
excited
about
the
concert
tonight
!
Adverbial
use
developed
from
the
adjective
sense
during
the
mid-20th
century
,
especially
in
American
slang
.
interjection
used
to
express
approval
,
satisfaction
,
or
enthusiasm
.
•
“
Super
!”
the
teacher
said
when
she
saw
the
neat
handwriting
.
“
Super
!”
the
teacher
said
when
she
saw
the
neat
handwriting
.
•
We
can
leave
early
?
Super
!
We
can
leave
early
?
Super
!
Interjective
use
emerged
in
mid-20th-century
colloquial
speech
,
echoing
the
adjective
’
s
meaning
of
excellence
.
noun
informal
:
the
superintendent
of
an
apartment
building
,
responsible
for
maintenance
and
repairs
.
•
If
the
sink
leaks
,
call
the
super
to
fix
it
.
If
the
sink
leaks
,
call
the
super
to
fix
it
.
•
The
tenants
thanked
their
super
for
repainting
the
hallway
.
The
tenants
thanked
their
super
for
repainting
the
hallway
.
Clipped
form
of
“
superintendent
,”
first
recorded
in
American
English
in
the
late
19th
century
.
super-
prefix
above
,
beyond
,
or
greater
than
normal
.
•
Comic
books
often
feature
super-heroes
with
extraordinary
powers
.
Comic
books
often
feature
super-heroes
with
extraordinary
powers
.
•
Astronomers
study
super-massive
black
holes
at
the
centers
of
galaxies
.
Astronomers
study
super-massive
black
holes
at
the
centers
of
galaxies
.
From
Latin
super
“
above
,
over
”
used
as
a
prefix
in
classical
Latin
and
adopted
into
English
via
French
from
the
late
Middle
English
period
.
experiment
noun
a
scientific
test
carried
out
under
controlled
conditions
to
discover
,
prove
,
or
demonstrate
something
•
The
students
built
a
simple
circuit
to
perform
an
experiment
in
their
physics
class
.
The
students
built
a
simple
circuit
to
perform
an
experiment
in
their
physics
class
.
•
The
famous
double-slit
experiment
showed
that
light
behaves
like
both
a
wave
and
a
particle
.
The
famous
double-slit
experiment
showed
that
light
behaves
like
both
a
wave
and
a
particle
.
Late
Middle
English
from
Latin
experimentum
‘
a
test
,
trial
’,
from
experiri
‘
to
try
’.
verb
to
try
or
test
new
ideas
,
methods
,
or
activities
to
discover
what
effect
they
have
•
Painters
often
experiment
with
different
colors
to
create
unique
textures
.
Painters
often
experiment
with
different
colors
to
create
unique
textures
.
•
The
chef
decided
to
experiment
by
adding
chocolate
to
the
chili
recipe
.
The
chef
decided
to
experiment
by
adding
chocolate
to
the
chili
recipe
.
noun
an
attempt
to
try
something
new
to
see
what
happens
and
learn
from
the
result
•
Opening
a
pop-up
café
was
an
experiment
in
selling
healthy
fast
food
.
Opening
a
pop-up
café
was
an
experiment
in
selling
healthy
fast
food
.
•
Their
new
schedule
is
only
an
experiment
;
it
might
change
if
it
doesn
’
t
work
.
Their
new
schedule
is
only
an
experiment
;
it
might
change
if
it
doesn
’
t
work
.
personally
adverb
used
to
introduce
the
speaker
’
s
own
opinion
or
preference
•
Personally
,
I
like
working
early
in
the
morning
when
it
’
s
quiet
.
Personally
,
I
like
working
early
in
the
morning
when
it
’
s
quiet
.
•
Personally
,
I
don
’
t
think
the
movie
was
very
funny
.
Personally
,
I
don
’
t
think
the
movie
was
very
funny
.
adverb
by
oneself
and
not
through
another
person
or
by
distance
;
in
person
•
The
CEO
personally
greeted
every
new
employee
on
their
first
day
.
The
CEO
personally
greeted
every
new
employee
on
their
first
day
.
•
I
’
d
like
to
thank
you
personally
for
your
help
last
week
.
I
’
d
like
to
thank
you
personally
for
your
help
last
week
.
adverb
in
a
way
that
affects
or
is
meant
for
one
particular
person
,
especially
emotionally
•
Don
’
t
take
the
criticism
personally
;
it
’
s
about
the
work
,
not
you
.
Don
’
t
take
the
criticism
personally
;
it
’
s
about
the
work
,
not
you
.
•
He
felt
personally
responsible
when
the
project
failed
.
He
felt
personally
responsible
when
the
project
failed
.
perception
noun
the
ability
to
notice
or
become
aware
of
things
through
sight
,
hearing
,
touch
,
taste
,
or
smell
•
A
cat's
sharp
night
vision
gives
it
excellent
perception
in
the
dark
.
A
cat's
sharp
night
vision
gives
it
excellent
perception
in
the
dark
.
•
After
the
lights
went
out
,
her
sense
of
touch
became
key
to
her
perception
of
the
room
.
After
the
lights
went
out
,
her
sense
of
touch
became
key
to
her
perception
of
the
room
.
Late
Middle
English
,
from
Latin
‘
perceptio
’
meaning
‘
receiving
,
understanding
’,
from
‘
percipere
’ ‘
to
seize
,
understand
’.
noun
the
way
you
understand
or
think
about
something
;
an
opinion
or
belief
formed
in
your
mind
•
Media
coverage
can
shape
the
public's
perception
of
a
political
candidate
.
Media
coverage
can
shape
the
public's
perception
of
a
political
candidate
.
•
Traveling
abroad
changed
his
perception
of
other
cultures
.
Traveling
abroad
changed
his
perception
of
other
cultures
.
Late
Middle
English
,
from
Latin
‘
perceptio
’
meaning
‘
receiving
,
understanding
’,
from
‘
percipere
’ ‘
to
seize
,
understand
’.
proper
adjective
right
,
suitable
,
or
correct
for
a
particular
situation
or
purpose
•
Always
wear
proper
shoes
when
hiking
in
the
mountains
.
Always
wear
proper
shoes
when
hiking
in
the
mountains
.
•
The
teacher
showed
the
students
the
proper
way
to
hold
a
paintbrush
.
The
teacher
showed
the
students
the
proper
way
to
hold
a
paintbrush
.
From
Middle
English
'propre'
,
from
Old
French
,
from
Latin
'proprius'
meaning
‘
one
’
s
own
,
special
’.
adjective
real
,
complete
,
or
of
a
good
enough
standard
•
After
weeks
of
snacks
,
they
finally
sat
down
to
a
proper
meal
.
After
weeks
of
snacks
,
they
finally
sat
down
to
a
proper
meal
.
•
He
wants
a
proper
job
instead
of
temporary
gigs
.
He
wants
a
proper
job
instead
of
temporary
gigs
.
adjective
relating
only
to
the
main
or
central
part
of
something
,
excluding
the
surrounding
or
extra
parts
•
The
museum
proper
is
on
the
second
floor
;
the
café
is
in
the
lobby
.
The
museum
proper
is
on
the
second
floor
;
the
café
is
in
the
lobby
.
•
We
stayed
in
Paris
proper
,
not
the
suburbs
.
We
stayed
in
Paris
proper
,
not
the
suburbs
.
adverb
very
;
extremely
(
informal
use
)
•
It
was
proper
cold
last
night
.
It
was
proper
cold
last
night
.
•
She
was
proper
tired
after
the
marathon
.
She
was
proper
tired
after
the
marathon
.
adjective
strict
or
narrow
compared
to
the
whole
set
it
is
related
to
,
as
in
mathematics
(
e
.
g
.,
proper
subset
or
proper
fraction
)
•
One-half
is
a
proper
fraction
because
the
numerator
is
smaller
than
the
denominator
.
One-half
is
a
proper
fraction
because
the
numerator
is
smaller
than
the
denominator
.
•
A
proper
subset
of
a
set
excludes
at
least
one
element
of
the
original
set
.
A
proper
subset
of
a
set
excludes
at
least
one
element
of
the
original
set
.
upper
adjective
situated
above
or
at
a
higher
level
or
part
•
The
upper
shelf
was
too
high
for
the
child
to
reach
.
The
upper
shelf
was
too
high
for
the
child
to
reach
.
•
Our
apartment
is
on
the
upper
floor
overlooking
the
river
.
Our
apartment
is
on
the
upper
floor
overlooking
the
river
.
From
Old
English
ufera
“
higher
,
upper
,”
comparative
of
ufe
“
above
.”
noun
the
part
of
a
shoe
or
boot
that
covers
the
top
and
sides
of
the
foot
above
the
sole
•
The
leather
upper
of
my
sneakers
tore
after
months
of
hiking
.
The
leather
upper
of
my
sneakers
tore
after
months
of
hiking
.
•
These
boots
have
a
waterproof
upper
that
keeps
my
feet
dry
.
These
boots
have
a
waterproof
upper
that
keeps
my
feet
dry
.
Noun
sense
recorded
from
the
17th
century
,
referring
to
the
“
upper
part
”
of
a
shoe
.
noun
an
illegal
or
prescription
drug
or
other
substance
that
makes
you
feel
more
awake
and
energetic
•
Some
truck
drivers
take
uppers
to
stay
awake
during
long
overnight
journeys
.
Some
truck
drivers
take
uppers
to
stay
awake
during
long
overnight
journeys
.
•
The
doctor
warned
her
that
mixing
uppers
with
alcohol
could
be
dangerous
.
The
doctor
warned
her
that
mixing
uppers
with
alcohol
could
be
dangerous
.
Slang
sense
emerged
in
the
1960s
from
the
idea
of
a
drug
that
“
lifts
”
or
“
ups
”
your
energy
.
personality
noun
-
personality
,
personalities
the
set
of
qualities
that
make
a
person
different
from
others
in
the
way
they
think
,
feel
,
and
behave
•
Maria's
cheerful
personality
makes
everyone
feel
welcome
at
the
office
.
Maria's
cheerful
personality
makes
everyone
feel
welcome
at
the
office
.
•
Even
though
the
twins
look
alike
,
their
personality
differences
are
obvious
.
Even
though
the
twins
look
alike
,
their
personality
differences
are
obvious
.
from
Latin
personalitas
“
quality
of
being
a
person
,”
based
on
persona
“
mask
,
character
.”
noun
-
personality
,
personalities
a
lively
,
interesting
quality
that
makes
someone
or
something
attractive
or
distinctive
•
The
small
café
on
the
corner
has
so
much
personality
with
its
colorful
chairs
and
handwritten
menus
.
The
small
café
on
the
corner
has
so
much
personality
with
its
colorful
chairs
and
handwritten
menus
.
•
Paintings
on
the
walls
give
the
apartment
personality
.
Paintings
on
the
walls
give
the
apartment
personality
.
extension
of
sense
relating
to
people
,
applied
figuratively
to
objects
and
voices
since
the
early
20th
century
noun
-
personality
,
personalities
a
well-known
person
,
especially
in
television
,
radio
,
or
sports
•
The
popular
radio
personality
greeted
listeners
with
a
friendly
laugh
.
The
popular
radio
personality
greeted
listeners
with
a
friendly
laugh
.
•
Several
TV
personalities
attended
the
charity
gala
.
Several
TV
personalities
attended
the
charity
gala
.
sense
of
“
celebrity
”
arose
in
mid-20th-century
American
media
slang
,
from
the
idea
of
someone
whose
public
character
is
well
known
.
permit
verb
-
permit
,
permitting
,
permits
,
permitted
to
allow
someone
to
do
something
,
or
to
allow
something
to
happen
•
The
teacher
did
not
permit
students
to
use
phones
during
class
.
The
teacher
did
not
permit
students
to
use
phones
during
class
.
•
The
security
guard
permitted
us
to
enter
the
building
after
checking
our
IDs
.
The
security
guard
permitted
us
to
enter
the
building
after
checking
our
IDs
.
from
Latin
‘
permittere
’
meaning
‘
to
let
go
through
’
noun
an
official
paper
or
electronic
document
that
says
you
are
allowed
to
do
something
•
You
need
a
parking
permit
to
leave
your
car
on
this
street
.
You
need
a
parking
permit
to
leave
your
car
on
this
street
.
•
She
applied
for
a
work
permit
before
moving
to
Canada
.
She
applied
for
a
work
permit
before
moving
to
Canada
.
sense
developed
in
the
17th
century
from
the
verbal
noun
‘
permit
’
meaning
permission
.
noun
-
permit
a
large
,
flat
,
silvery
fish
that
lives
in
warm
coastal
waters
of
the
Atlantic
and
is
popular
with
sport
fishers
•
The
angler
was
thrilled
when
he
caught
a
20-pound
permit
off
the
Florida
Keys
.
The
angler
was
thrilled
when
he
caught
a
20-pound
permit
off
the
Florida
Keys
.
•
Schools
of
permit
often
feed
on
crabs
near
sandy
flats
.
Schools
of
permit
often
feed
on
crabs
near
sandy
flats
.
likely
from
Spanish
‘
palometa
’,
adopted
by
English-speaking
fishers
in
the
Caribbean
region
.
perfectly
adverb
in
a
flawless
way
,
without
any
errors
or
defects
•
The
gymnast
landed
her
routine
perfectly
,
drawing
loud
applause
from
the
crowd
.
The
gymnast
landed
her
routine
perfectly
,
drawing
loud
applause
from
the
crowd
.
•
He
adjusted
the
camera
settings
until
the
picture
looked
perfectly
sharp
on
the
screen
.
He
adjusted
the
camera
settings
until
the
picture
looked
perfectly
sharp
on
the
screen
.
From
perfect
+
-ly
,
first
recorded
in
Middle
English
adverb
completely
or
absolutely
,
used
to
emphasize
an
adjective
,
verb
,
or
clause
•
I
am
perfectly
aware
of
the
consequences
of
this
decision
.
I
am
perfectly
aware
of
the
consequences
of
this
decision
.
•
It
was
a
warm
evening
,
and
the
children
felt
perfectly
fine
playing
outside
.
It
was
a
warm
evening
,
and
the
children
felt
perfectly
fine
playing
outside
.
Intensifying
use
attested
from
the
16th
century
,
extending
the
literal
sense
of
“
in
a
perfect
manner
.”
sharp
adjective
-
sharp
,
sharper
,
sharpest
having
an
edge
or
point
that
can
cut
or
pierce
things
easily
•
Be
careful
,
the
cook's
new
knife
is
very
sharp
.
Be
careful
,
the
cook's
new
knife
is
very
sharp
.
•
The
cactus
has
sharp
spines
that
can
prick
your
fingers
.
The
cactus
has
sharp
spines
that
can
prick
your
fingers
.
adverb
-
sharp
,
sharper
,
sharpest
exactly
at
the
stated
time
or
point
•
The
class
starts
at
9
:
00
a
.
m
.
sharp
.
The
class
starts
at
9
:
00
a
.
m
.
sharp
.
•
Be
here
by
noon
sharp
or
you
’
ll
miss
the
bus
.
Be
here
by
noon
sharp
or
you
’
ll
miss
the
bus
.
adjective
-
sharp
,
sharper
,
sharpest
happening
suddenly
and
with
great
force
or
intensity
•
A
sharp
pain
shot
through
her
ankle
when
she
twisted
it
.
A
sharp
pain
shot
through
her
ankle
when
she
twisted
it
.
•
There
was
a
sharp
drop
in
temperature
after
sunset
.
There
was
a
sharp
drop
in
temperature
after
sunset
.
adjective
-
sharp
,
sharper
,
sharpest
quick
to
notice
and
understand
things
;
intelligent
and
alert
•
Maria
has
a
sharp
mind
and
solves
puzzles
fast
.
Maria
has
a
sharp
mind
and
solves
puzzles
fast
.
•
The
lawyer
asked
a
series
of
sharp
questions
during
the
trial
.
The
lawyer
asked
a
series
of
sharp
questions
during
the
trial
.
adjective
-
sharp
,
sharper
,
sharpest
looking
neat
,
stylish
,
and
well-dressed
•
Carlos
looked
sharp
in
his
new
navy
suit
.
Carlos
looked
sharp
in
his
new
navy
suit
.
•
That
is
a
sharp
jacket
—
where
did
you
get
it
?
That
is
a
sharp
jacket
—
where
did
you
get
it
?
adjective
-
sharp
,
sharper
,
sharpest
having
a
strong
,
acid
,
or
sour
taste
or
smell
•
The
cheese
has
a
sharp
flavor
that
I
love
.
The
cheese
has
a
sharp
flavor
that
I
love
.
•
Lemons
add
a
sharp
taste
to
the
sauce
.
Lemons
add
a
sharp
taste
to
the
sauce
.
adjective
-
sharp
,
sharper
,
sharpest
in
music
,
higher
in
pitch
by
one
semitone
•
The
singer
hit
a
sharp
note
at
the
end
of
the
song
.
The
singer
hit
a
sharp
note
at
the
end
of
the
song
.
•
Make
the
F
a
sharp
in
this
measure
,
please
.
Make
the
F
a
sharp
in
this
measure
,
please
.
adjective
-
sharp
,
sharper
,
sharpest
clear
and
distinct
in
appearance
,
sound
,
or
outline
•
The
photo
is
so
sharp
you
can
see
every
leaf
.
The
photo
is
so
sharp
you
can
see
every
leaf
.
•
His
voice
came
through
the
speakers
loud
and
sharp
.
His
voice
came
through
the
speakers
loud
and
sharp
.
adverb
-
sharp
,
sharper
,
sharpest
suddenly
and
quickly
,
especially
changing
direction
or
tone
•
Turn
sharp
left
after
the
bridge
.
Turn
sharp
left
after
the
bridge
.
•
The
dog
barked
sharp
at
the
stranger
.
The
dog
barked
sharp
at
the
stranger
.
pepper
noun
-
pepper
A
hot
,
pungent
powder
or
small
granules
made
by
grinding
dried
peppercorns
,
used
to
give
food
a
sharp
flavour
.
•
Please
pass
the
pepper
so
I
can
season
my
eggs
.
Please
pass
the
pepper
so
I
can
season
my
eggs
.
•
A
dash
of
pepper
made
the
soup
taste
much
better
.
A
dash
of
pepper
made
the
soup
taste
much
better
.
Old
English
peper
,
from
Latin
piper
,
from
Greek
peperi
,
ultimately
from
Sanskrit
pippalī
.
noun
A
hollow
,
usually
sweet
or
mildly
hot
vegetable
that
can
be
green
,
red
,
yellow
,
or
other
colours
;
also
,
any
of
several
hot
chili
fruits
.
•
She
stuffed
a
red
pepper
with
rice
and
cheese
.
She
stuffed
a
red
pepper
with
rice
and
cheese
.
•
Green
peppers
turn
yellow
and
then
red
as
they
ripen
.
Green
peppers
turn
yellow
and
then
red
as
they
ripen
.
verb
To
put
pepper
on
or
into
food
to
add
flavour
.
•
He
peppered
his
steak
before
putting
it
on
the
grill
.
He
peppered
his
steak
before
putting
it
on
the
grill
.
•
Taste
the
sauce
and
pepper
it
if
necessary
.
Taste
the
sauce
and
pepper
it
if
necessary
.
noun
The
small
dried
dark
berry
of
the
tropical
vine
Piper
nigrum
,
or
the
plant
itself
,
from
which
the
spice
is
made
.
•
The
humid
climate
of
Kerala
is
perfect
for
growing
pepper
.
The
humid
climate
of
Kerala
is
perfect
for
growing
pepper
.
•
Traders
once
sailed
vast
distances
to
buy
sacks
of
dried
pepper
.
Traders
once
sailed
vast
distances
to
buy
sacks
of
dried
pepper
.
verb
To
cover
or
fill
something
with
many
small
spots
,
marks
,
or
objects
,
or
to
bombard
someone
with
many
things
such
as
questions
.
•
Bullet
holes
peppered
the
old
sign
by
the
road
.
Bullet
holes
peppered
the
old
sign
by
the
road
.
•
Reporters
peppered
the
mayor
with
questions
after
the
meeting
.
Reporters
peppered
the
mayor
with
questions
after
the
meeting
.
perceive
verb
-
perceive
,
perceiving
,
perceives
,
perceived
to
notice
or
become
aware
of
something
through
your
senses
,
especially
sight
,
hearing
,
or
smell
•
From
the
kitchen
,
Ella
could
perceive
the
aroma
of
fresh
bread
.
From
the
kitchen
,
Ella
could
perceive
the
aroma
of
fresh
bread
.
•
In
the
darkness
,
the
guard
perceived
a
slight
movement
near
the
gate
.
In
the
darkness
,
the
guard
perceived
a
slight
movement
near
the
gate
.
Late
Middle
English
,
from
Old
French
«perceivre»
,
from
Latin
«percipere»
meaning
‘
seize
,
understand
’.
verb
-
perceive
,
perceiving
,
perceives
,
perceived
to
understand
,
think
about
,
or
interpret
someone
or
something
in
a
particular
way
•
Many
students
perceive
math
as
a
difficult
subject
.
Many
students
perceive
math
as
a
difficult
subject
.
•
The
artist
was
perceived
as
a
genius
by
his
peers
.
The
artist
was
perceived
as
a
genius
by
his
peers
.
Same
origin
as
Sense
1
:
from
Latin
«percipere»
,
through
Old
French
and
Middle
English
developments
.
whisper
verb
to
speak
in
a
very
quiet
voice
so
that
only
someone
close
can
hear
you
•
Please
whisper
during
the
movie
so
you
don
’
t
disturb
others
.
Please
whisper
during
the
movie
so
you
don
’
t
disturb
others
.
•
She
leaned
over
and
whispered
the
answer
to
her
friend
.
She
leaned
over
and
whispered
the
answer
to
her
friend
.
Old
English
hwisprian
,
related
to
Old
Norse
hvísla
,
meaning
‘
to
hiss
softly
’.
noun
a
very
quiet
way
of
speaking
that
can
only
be
heard
by
someone
close
•
She
lowered
her
voice
to
a
whisper
so
the
teacher
wouldn
’
t
hear
.
She
lowered
her
voice
to
a
whisper
so
the
teacher
wouldn
’
t
hear
.
•
They
spoke
in
a
whisper
in
the
library
.
They
spoke
in
a
whisper
in
the
library
.
verb
(
of
wind
,
leaves
,
water
,
etc
.)
to
make
a
soft
,
rustling
or
murmuring
sound
•
The
pine
trees
whispered
in
the
night
breeze
.
The
pine
trees
whispered
in
the
night
breeze
.
•
Waves
whispered
against
the
shore
.
Waves
whispered
against
the
shore
.
noun
a
quiet
rumour
or
piece
of
gossip
spoken
privately
•
There
is
a
whisper
that
the
company
will
close
.
There
is
a
whisper
that
the
company
will
close
.
•
Political
whispers
spread
through
the
capital
.
Political
whispers
spread
through
the
capital
.
noun
a
very
small
amount
or
faint
trace
of
something
•
A
whisper
of
cinnamon
gave
the
coffee
extra
warmth
.
A
whisper
of
cinnamon
gave
the
coffee
extra
warmth
.
•
The
sky
held
a
whisper
of
pink
at
dawn
.
The
sky
held
a
whisper
of
pink
at
dawn
.
personnel
noun
-
personnel
the
people
who
work
for
an
organization
,
especially
its
employees
as
a
whole
•
The
company
hired
extra
personnel
to
handle
the
holiday
rush
.
The
company
hired
extra
personnel
to
handle
the
holiday
rush
.
•
All
medical
personnel
were
on
standby
during
the
emergency
.
All
medical
personnel
were
on
standby
during
the
emergency
.
Borrowed
into
English
in
the
19th
century
from
French
personnel
(“
staff
,
employees
”),
from
personne
(“
person
”).
noun
-
personnel
the
department
in
an
organization
that
recruits
,
trains
,
and
helps
employees
(
now
often
called
Human
Resources
)
•
If
you
have
questions
about
your
vacation
days
,
talk
to
personnel
on
the
third
floor
.
If
you
have
questions
about
your
vacation
days
,
talk
to
personnel
on
the
third
floor
.
•
She
transferred
from
marketing
to
personnel
last
year
.
She
transferred
from
marketing
to
personnel
last
year
.
Developed
from
the
earlier
sense
of
‘
people
employed
by
an
organization
’,
and
by
the
mid-20th
century
came
to
refer
to
the
office
that
manages
those
people
.
properly
adverb
in
a
way
that
is
correct
,
suitable
,
or
satisfactory
•
Please
make
sure
the
seat
belt
is
properly
fastened
before
the
roller-coaster
starts
.
Please
make
sure
the
seat
belt
is
properly
fastened
before
the
roller-coaster
starts
.
•
The
chef
taught
us
how
to
properly
sharpen
a
kitchen
knife
on
a
whetstone
.
The
chef
taught
us
how
to
properly
sharpen
a
kitchen
knife
on
a
whetstone
.
From
Middle
English
proprely
,
from
Old
French
proprement
(“
suitably
,
appropriately
”),
from
Latin
proprius
(“
one
’
s
own
,
proper
”)
plus
the
adverbial
suffix
-ly
.
adverb
(
informal
)
very
;
completely
;
thoroughly
•
It
’
s
properly
freezing
tonight
—
grab
a
thicker
coat
!
It
’
s
properly
freezing
tonight
—
grab
a
thicker
coat
!
•
The
band
’
s
new
album
is
properly
brilliant
;
you
should
give
it
a
listen
.
The
band
’
s
new
album
is
properly
brilliant
;
you
should
give
it
a
listen
.
adverb
exactly
or
strictly
speaking
;
in
fact
rather
than
in
name
only
•
The
animal
is
not
properly
a
fish
;
it
is
a
mammal
that
lives
in
the
sea
.
The
animal
is
not
properly
a
fish
;
it
is
a
mammal
that
lives
in
the
sea
.
•
Rome
,
properly
speaking
,
includes
the
Vatican
City
as
an
independent
state
within
its
walls
.
Rome
,
properly
speaking
,
includes
the
Vatican
City
as
an
independent
state
within
its
walls
.
permanent
adjective
lasting
or
meant
to
last
for
a
long
time
or
forever
,
without
changing
•
The
bridge
was
built
to
be
permanent
,
not
just
a
temporary
crossing
.
The
bridge
was
built
to
be
permanent
,
not
just
a
temporary
crossing
.
•
She
made
a
permanent
mark
on
the
glass
with
a
diamond
tip
.
She
made
a
permanent
mark
on
the
glass
with
a
diamond
tip
.
noun
a
hairstyle
created
by
treating
the
hair
with
chemicals
so
that
it
stays
curly
or
wavy
for
several
months
•
Emma
decided
to
get
a
permanent
before
her
cousin
’
s
wedding
.
Emma
decided
to
get
a
permanent
before
her
cousin
’
s
wedding
.
•
His
mother
showed
him
an
old
photo
of
her
high
school
permanent
.
His
mother
showed
him
an
old
photo
of
her
high
school
permanent
.
hip
adjective
-
hip
,
hipper
,
hippest
fashionable
and
knowing
the
latest
styles
or
ideas
;
cool
•
The
new
downtown
café
looks
really
hip
with
its
colorful
murals
.
The
new
downtown
café
looks
really
hip
with
its
colorful
murals
.
•
He
thinks
he
is
hip
because
he
follows
every
new
music
trend
.
He
thinks
he
is
hip
because
he
follows
every
new
music
trend
.
20th-century
American
slang
;
origin
uncertain
,
possibly
from
African-American
Vernacular
English
.
developer
noun
a
person
who
writes
computer
programs
or
creates
software
applications
•
After
graduating
,
Maria
became
a
developer
at
a
video-game
studio
.
After
graduating
,
Maria
became
a
developer
at
a
video-game
studio
.
•
The
small
start-up
hired
three
more
developers
to
speed
up
the
app
release
.
The
small
start-up
hired
three
more
developers
to
speed
up
the
app
release
.
From
develop
+
–er
,
first
applied
to
software
creators
in
the
mid-20th
century
.
noun
a
person
or
company
that
buys
land
and
builds
houses
,
stores
,
or
offices
to
sell
or
rent
•
The
developer
plans
to
build
a
shopping
mall
on
the
empty
lot
.
The
developer
plans
to
build
a
shopping
mall
on
the
empty
lot
.
•
Local
residents
protested
the
developer's
plan
to
cut
down
the
old
trees
.
Local
residents
protested
the
developer's
plan
to
cut
down
the
old
trees
.
Develop
in
the
sense
of
"
convert
land
to
profitable
use
"
+
–er
,
first
recorded
late
19th
century
in
the
United
States
.
noun
-
developer
a
chemical
liquid
used
in
photography
to
make
the
hidden
image
on
film
or
photographic
paper
appear
•
She
poured
the
exposed
film
into
a
tank
filled
with
developer
.
She
poured
the
exposed
film
into
a
tank
filled
with
developer
.
•
Always
wear
gloves
when
handling
developer
in
the
darkroom
.
Always
wear
gloves
when
handling
developer
in
the
darkroom
.
Sense
originates
from
the
19th-century
photographic
process
,
in
which
the
solution
‘
develops
’
the
latent
image
.
permission
noun
the
act
of
allowing
someone
to
do
something
,
or
the
state
of
being
allowed
to
do
it
;
consent
or
authorization
•
Sara
asked
her
parents
for
permission
to
stay
out
late
.
Sara
asked
her
parents
for
permission
to
stay
out
late
.
•
“
You
do
not
have
permission
to
enter
this
area
,”
the
guard
said
firmly
.
“
You
do
not
have
permission
to
enter
this
area
,”
the
guard
said
firmly
.
Late
Middle
English
,
from
Old
French
"
permissioun
",
from
Latin
"
permissio
"
meaning
"
allowance
",
from
"
permittere
" "
to
allow
".
noun
in
computing
,
a
setting
or
rule
that
decides
what
a
user
or
program
is
allowed
to
do
with
a
file
,
folder
,
or
resource
•
The
administrator
changed
the
file
’
s
permissions
to
read-only
.
The
administrator
changed
the
file
’
s
permissions
to
read-only
.
•
Without
the
right
permission
,
the
app
cannot
access
your
camera
.
Without
the
right
permission
,
the
app
cannot
access
your
camera
.
Borrowed
into
technical
jargon
in
the
1960s–70s
as
computer
operating
systems
began
to
include
access-control
lists
.
cooperation
noun
-
cooperation
the
act
of
working
together
with
other
people
or
groups
to
reach
a
shared
goal
•
The
students'
cooperation
made
the
group
project
fun
and
successful
.
The
students'
cooperation
made
the
group
project
fun
and
successful
.
•
International
scientists
showed
remarkable
cooperation
while
developing
the
vaccine
.
International
scientists
showed
remarkable
cooperation
while
developing
the
vaccine
.
From
Latin
cooperātiō
,
from
cooperārī
“
to
work
together
.”
noun
-
cooperation
the
willingness
to
do
what
someone
asks
or
tells
you
,
by
following
rules
or
instructions
•
Thank
you
for
your
cooperation
during
the
security
screening
.
Thank
you
for
your
cooperation
during
the
security
screening
.
•
The
teacher
asked
for
the
class's
cooperation
in
keeping
the
room
tidy
.
The
teacher
asked
for
the
class's
cooperation
in
keeping
the
room
tidy
.
Same
origin
as
the
primary
sense
,
but
used
in
formal
requests
for
help
or
discipline
.
desperate
adjective
feeling
or
showing
a
loss
of
all
hope
•
After
months
without
work
,
he
felt
desperate
and
alone
.
After
months
without
work
,
he
felt
desperate
and
alone
.
•
The
lost
hikers
grew
desperate
when
their
water
ran
out
.
The
lost
hikers
grew
desperate
when
their
water
ran
out
.
Late
Middle
English
from
Latin
"
desperatus
,"
past
participle
of
"
desperare
"
meaning
“
to
lose
hope
.”
adjective
needing
or
wanting
something
so
much
that
you
will
try
almost
anything
to
get
it
•
I'm
desperate
for
a
cup
of
coffee
this
morning
.
I'm
desperate
for
a
cup
of
coffee
this
morning
.
•
The
plants
were
desperate
for
rain
after
the
long
drought
.
The
plants
were
desperate
for
rain
after
the
long
drought
.
Same
origin
as
Sense
1
:
from
Latin
“
desperare
,”
but
figurative
use
for
strong
need
developed
in
the
19th
century
.
adjective
(
of
an
action
)
showing
reckless
determination
because
all
other
options
seem
to
have
failed
•
In
a
desperate
bid
to
win
,
the
runner
sprinted
despite
his
injury
.
In
a
desperate
bid
to
win
,
the
runner
sprinted
despite
his
injury
.
•
The
doctor
made
a
desperate
attempt
to
restart
the
patient's
heart
.
The
doctor
made
a
desperate
attempt
to
restart
the
patient's
heart
.
Sense
extended
in
the
17th
century
to
actions
taken
when
hope
is
lost
.
operating
verb
-
operate
,
operating
,
operates
,
operated
running
or
controlling
something
so
that
it
works
as
it
should
•
The
technician
is
operating
the
3-D
printer
during
the
demonstration
.
The
technician
is
operating
the
3-D
printer
during
the
demonstration
.
•
Emergency
workers
kept
operating
the
pumps
all
night
to
remove
the
floodwater
.
Emergency
workers
kept
operating
the
pumps
all
night
to
remove
the
floodwater
.
noun
the
activity
of
running
or
controlling
something
so
that
it
works
•
Proper
operating
of
heavy
machinery
reduces
the
risk
of
accidents
.
Proper
operating
of
heavy
machinery
reduces
the
risk
of
accidents
.
•
The
manual
explains
the
operating
of
the
new
coffee
machine
step
by
step
.
The
manual
explains
the
operating
of
the
new
coffee
machine
step
by
step
.
adjective
relating
to
the
normal
working
or
day-to-day
running
of
a
machine
,
business
,
or
system
•
The
company
’
s
operating
costs
fell
after
switching
to
solar
power
.
The
company
’
s
operating
costs
fell
after
switching
to
solar
power
.
•
Always
read
the
operating
instructions
before
starting
the
blender
.
Always
read
the
operating
instructions
before
starting
the
blender
.
superior
adjective
located
higher
than
something
else
in
position
,
level
,
or
physical
height
•
Passengers
stored
their
bags
in
the
superior
compartments
above
the
seats
.
Passengers
stored
their
bags
in
the
superior
compartments
above
the
seats
.
•
The
bird
built
its
nest
on
a
superior
branch
high
above
the
river
.
The
bird
built
its
nest
on
a
superior
branch
high
above
the
river
.
adjective
better
in
quality
,
ability
,
or
value
than
something
or
someone
else
•
This
brand
of
chocolate
tastes
superior
to
the
cheaper
one
.
This
brand
of
chocolate
tastes
superior
to
the
cheaper
one
.
•
Researchers
found
the
new
battery
had
superior
performance
in
cold
weather
.
Researchers
found
the
new
battery
had
superior
performance
in
cold
weather
.
From
Latin
superior
“
higher
,
upper
,
better
,”
the
comparative
of
superus
“
above
.”
noun
a
person
who
is
higher
than
you
in
rank
or
position
,
especially
at
work
•
If
you
have
any
questions
,
please
ask
your
superior
.
If
you
have
any
questions
,
please
ask
your
superior
.
•
The
soldier
saluted
his
superior
before
entering
the
tent
.
The
soldier
saluted
his
superior
before
entering
the
tent
.
adjective
(
anatomy
)
situated
above
or
toward
the
head
when
comparing
parts
of
the
body
•
The
heart
sits
superior
to
the
diaphragm
in
the
chest
cavity
.
The
heart
sits
superior
to
the
diaphragm
in
the
chest
cavity
.
•
In
fish
,
the
dorsal
fin
is
located
on
the
superior
surface
.
In
fish
,
the
dorsal
fin
is
located
on
the
superior
surface
.
operator
noun
someone
whose
job
is
to
control
a
machine
,
vehicle
,
or
system
•
The
escalator
stopped
because
the
operator
turned
it
off
for
maintenance
.
The
escalator
stopped
because
the
operator
turned
it
off
for
maintenance
.
•
A
skilled
crane
operator
lifted
the
steel
beams
into
place
.
A
skilled
crane
operator
lifted
the
steel
beams
into
place
.
From
Latin
“
operator
”
meaning
‘
worker
’,
from
“
operārī
” ‘
to
work
’.
noun
a
person
whose
job
is
to
connect
telephone
calls
and
give
information
to
callers
•
When
I
dialed
zero
,
the
operator
asked
which
department
I
wanted
.
When
I
dialed
zero
,
the
operator
asked
which
department
I
wanted
.
•
In
old
movies
,
you
often
see
a
telephone
operator
plugging
cables
into
a
big
board
.
In
old
movies
,
you
often
see
a
telephone
operator
plugging
cables
into
a
big
board
.
Extension
of
the
general
sense
‘
one
who
operates
’,
applied
to
early
telephone
switchboards
in
the
late
19th
century
.
noun
a
symbol
or
word
in
mathematics
or
computing
that
tells
the
system
to
perform
a
particular
calculation
or
action
•
In
the
equation
3
+
2
,
the
plus
sign
is
an
operator
.
In
the
equation
3
+
2
,
the
plus
sign
is
an
operator
.
•
Use
the
multiplication
operator
*
to
find
the
product
of
two
numbers
in
the
program
.
Use
the
multiplication
operator
*
to
find
the
product
of
two
numbers
in
the
program
.
Technical
use
developed
in
the
19th
century
to
name
symbols
that
‘
operate
’
on
numbers
or
variables
.
noun
informal
:
someone
who
is
very
good
at
making
deals
or
getting
what
they
want
,
often
in
a
clever
or
sometimes
dishonest
way
•
Jake
is
a
real
operator
;
he
always
walks
away
with
the
best
bargain
.
Jake
is
a
real
operator
;
he
always
walks
away
with
the
best
bargain
.
•
The
smooth
operator
convinced
investors
to
fund
his
risky
scheme
.
The
smooth
operator
convinced
investors
to
fund
his
risky
scheme
.
Metaphorical
extension
from
‘
one
who
works
machinery
’
to
‘
one
who
skillfully
works
situations
’,
attested
since
the
early
20th
century
.
experimental
adjective
made
or
done
to
test
an
idea
scientifically
and
see
what
happens
•
The
experimental
vaccine
was
tested
on
volunteers
.
The
experimental
vaccine
was
tested
on
volunteers
.
•
A
team
of
engineers
built
an
experimental
car
that
runs
on
algae
.
A
team
of
engineers
built
an
experimental
car
that
runs
on
algae
.
From
experiment
+-al
,
first
recorded
in
the
early
1600s
.
adjective
using
new
and
unusual
ideas
,
styles
,
or
methods
,
and
not
yet
widely
accepted
•
The
director's
experimental
film
had
no
dialogue
at
all
.
The
director's
experimental
film
had
no
dialogue
at
all
.
•
He
loves
listening
to
experimental
jazz
that
mixes
electronic
sounds
.
He
loves
listening
to
experimental
jazz
that
mixes
electronic
sounds
.
From
experiment
+-al
,
broadened
in
the
early
1900s
to
arts
and
culture
.