Synonyms|215Antonyms|56|Broader|0Narrower|0Related|93

78 entries under useless topic. ×

1
chimerical(wild, unreasonable, absurd, abstract)
1
defeasible(adjective, inferior, inadequate, limited, feeble)
1
idealistic(wild, unreasonable, absurd, abstract)
1
illogical(wild, unreasonable, absurd, abstract)
1
impossible(wild, unreasonable, absurd, abstract)
1
impracticable(wild, unreasonable, absurd, unrealistic)
1
improbable(wild, unreasonable, absurd, abstract)
1
inapplicable(wild, unreasonable, absurd, abstract)
1
infeasible(wild, unreasonable, absurd, unrealistic)
1
inoperable(wild, unreasonable, absurd, abstract)
1
ivory-tower(wild, unreasonable, absurd, abstract)
1
neutralized(adjective, inferior, inadequate, limited, feeble)
1
no go(expression, wild, unreasonable, inadequate, feeble)
1
nonfunctional(wild, unreasonable, absurd, abstract)
1
nonviable(wild, unreasonable, absurd, abstract)
1
otherworldly(wild, unreasonable, absurd, abstract)
1
quixotic(wild, unreasonable, absurd, abstract)
1
romantic(wild, unreasonable, absurd, abstract)
1
speculative(wild, unreasonable, absurd, abstract)
1
spineless(adjective, inferior, inadequate, limited, feeble)
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ChicagoSmart Define. 2016. "inefficacious thesaurus" https://smartdefine.org/inefficacious/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, inefficacious thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/inefficacious/thesaurus/synonyms>.
MLASmart Define. "inefficacious thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/inefficacious/thesaurus/synonyms>