Synonyms|215Antonyms|56|Broader|0Narrower|0Related|93
1
fatuous
1
featherweight
1
foiled(adjective, arouse bad feelings)
1
for nothing(adjective, arouse bad feelings)
1
frustrated(adjective, arouse bad feelings)
1
helpless(weak, skill, unfit, inept, powerless)
1
hog-tied(weak, skill, unfit, inept, powerless)
1
idealistic(wild, unreasonable, useless, absurd, abstract)
1
illogical(wild, unreasonable, useless, absurd, abstract)
1
impossible(wild, unreasonable, useless, absurd, abstract)
1
impracticable(wild, unreasonable, useless, absurd, unrealistic)
1
improbable(wild, unreasonable, useless, absurd, abstract)
1
impuissant(weak, skill, inadequate, unfit, inept)
1
in vain(adjective, unsuccess)
1
inane
1
inapplicable(wild, unreasonable, useless, absurd, abstract)
1
incapable(weak, skill, incompetent, unfit, inept)
1
incapacitated(weak, skill, unfit, inept, powerless)
1
inconsequential
1
infeasible(wild, unreasonable, useless, absurd, unrealistic)
For more, visit Inefficacious on Power Thesaurus
10 years ago|3.7k views|share |citing 
APASmart Define. (2016). inefficacious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inefficacious/thesaurus/synonyms
ChicagoSmart Define. 2016. "inefficacious thesaurus" https://smartdefine.org/inefficacious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, inefficacious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inefficacious/thesaurus/synonyms>.
MLASmart Define. "inefficacious thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/inefficacious/thesaurus/synonyms>