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inefficient
adjective
not
achieving
maximum
productivity
;
failing
to
make
the
best
use
of
time
,
resources
,
effort
,
or
money
.
•
The
old
tractor
is
too
inefficient
and
breaks
down
often
.
The
old
tractor
is
too
inefficient
and
breaks
down
often
.
•
Their
inefficient
marketing
strategy
lost
them
many
customers
.
Their
inefficient
marketing
strategy
lost
them
many
customers
.
Late
16th
century
:
from
late
Latin
inefficiens
,
from
in-
'not'
+
efficient-
(
from
efficere
'accomplish'
),
present
participle
stem
of
efficere
.
