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valid
adjective
officially
acceptable
or
in
force
because
it
follows
all
rules
or
is
within
the
allowed
period
β’
Is
your
passport
still
valid
or
do
you
need
a
new
one
?
Is
your
passport
still
valid
or
do
you
need
a
new
one
?
β’
The
coupon
is
valid
until
the
end
of
the
month
.
The
coupon
is
valid
until
the
end
of
the
month
.
From
Latin
validus
meaning
β
strong
,
powerful
,
effective
,β
from
valΔre
β
to
be
strong
.β
adjective
based
on
good
reasons
,
facts
,
or
clear
logic
;
sound
and
convincing
β’
She
made
a
valid
argument
for
starting
the
project
earlier
.
She
made
a
valid
argument
for
starting
the
project
earlier
.
β’
That's
a
valid
question
and
deserves
an
answer
.
That's
a
valid
question
and
deserves
an
answer
.
Same
origin
as
Sense
1
,
shaped
by
use
in
logic
and
law
in
the
16th
century
.
interjection
(
informal
)
used
to
show
agreement
that
someone
β
s
point
is
fair
or
reasonable
β’
β
We
should
leave
early
to
avoid
traffic
.β β
Valid
.β
β
We
should
leave
early
to
avoid
traffic
.β β
Valid
.β
β’
When
Leah
said
the
rules
were
unfair
,
everyone
nodded
and
said
, β
Valid
.β
When
Leah
said
the
rules
were
unfair
,
everyone
nodded
and
said
, β
Valid
.β
Extension
of
the
adjective
β
s
sense
of
correctness
,
popularized
in
U
.
S
.
youth
slang
in
the
early
2000s
.
validity
noun
-
validity
,
validities
the
state
of
being
legally
acceptable
or
officially
in
force
β’
The
validity
of
his
passport
was
questioned
at
the
border
.
The
validity
of
his
passport
was
questioned
at
the
border
.
β’
Before
signing
,
she
asked
her
lawyer
to
confirm
the
validity
of
the
contract
.
Before
signing
,
she
asked
her
lawyer
to
confirm
the
validity
of
the
contract
.
From
Latin
validus
β
strong
,
effective
β
+
English
suffix
-ity
.
noun
-
validity
,
validities
the
quality
of
an
idea
or
argument
that
makes
it
logical
and
convincing
β’
She
questioned
the
validity
of
his
argument
during
the
debate
.
She
questioned
the
validity
of
his
argument
during
the
debate
.
β’
Scientists
test
the
validity
of
their
theories
through
experiments
.
Scientists
test
the
validity
of
their
theories
through
experiments
.
noun
-
validity
,
validities
in
research
or
testing
,
the
degree
to
which
a
method
or
instrument
accurately
measures
what
it
is
supposed
to
measure
β’
High
validity
ensures
that
the
survey
truly
reflects
public
opinion
.
High
validity
ensures
that
the
survey
truly
reflects
public
opinion
.
β’
Psychologists
assess
the
validity
of
a
test
before
using
it
with
patients
.
Psychologists
assess
the
validity
of
a
test
before
using
it
with
patients
.
