I. “+ adjective
Etymology: in- (I) + efficient
: not efficient:
a. : not producing the effect intended or desired : inefficacious , insufficient
inefficient measures
b. : wasteful of time or energy in performing work
statistics show that retailing … is inefficient — Wall Street Journal
c. : incapable of or indisposed to the effective performance of duties
inefficient workman
• in·efficiently “+ adverb
II. noun
( -s )
: an inefficient person