improficient
ADJECTIVE
inefficient
Synonyms
STRONGEST
WEAK
Antonyms
ADJECTIVE
unworkmanlike
Synonyms
WEAK
can't hack it
careless
disorganized
extravagant
faulty
feeble
half-baked
improvident
inapt
incapable
incompetent
ineffective
ineffectual
inefficacious
inept
inexpert
not cut out for
prodigal
shooting blanks
slack
slipshod
sloppy
slovenly
unfit
unprepared
unqualified
unskilled
unskillful
untrained
weak
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.