forceless
ADJECTIVE
impotent
Synonyms
STRONGEST
STRONG
WEAK
Antonyms
ADJECTIVE
ineffective
Synonyms
Antonyms
ADJECTIVE
ineffective/ineffectual
Synonyms
WEAK
abortive
anticlimactic
barren
bootless
defeasible
feckless
feeble
fruitless
futile
idle
impotent
inadequate
incompetent
indecisive
inefficacious
inefficient
inept
inferior
innocuous
inoperative
invertebrate
lame
limited
neutralized
nugatory
null
null and void
paltry
powerless
spineless
unable
unavailing
unfruitful
unproductive
unprofitable
unsuccessful
vain
void
withered
worthless
Antonyms
ADJECTIVE
inefficacious
Synonyms
WEAK
abortive
anticlimactic
barren
bootless
defeasible
feckless
feeble
fruitless
futile
idle
impotent
inadequate
incompetent
indecisive
ineffective
inefficient
inept
inferior
innocuous
inoperative
invertebrate
lame
limited
neutralized
nugatory
null
null and void
paltry
powerless
spineless
unable
unavailing
unfruitful
unproductive
unprofitable
unsuccessful
useless
vain
void
withered
worthless
ADJECTIVE
spineless
Synonyms
Antonyms
ADJECTIVE
void
Synonyms
Antonyms
ADJECTIVE
wan
Synonyms
Antonyms
ADJECTIVE
weak
Synonyms
STRONGEST
immature
inadequate
incomplete
ineffective
ineffectual
inept
lacking
limited
poor
shaky
slim
small
thin
WEAK
Antonyms
ADJECTIVE
weak
Synonyms
STRONGEST
anemic
feeble
fragile
frail
hesitant
powerless
shaky
sickly
sluggish
uncertain
unsteady
weakened
wobbly
WEAK
debilitated
decrepit
delicate
effete
enervated
epicene
exhausted
faint
flaccid
flimsy
impuissant
infirm
insubstantial
irresolute
lackadaisical
languid
languorous
limp
makeshift
out of gas
prostrate
puny
rickety
rocky
rotten
senile
spent
spindly
supine
torpid
undependable
unsound
unsubstantial
wasted
wavering
weakly
Antonyms
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.