307 entries under adjective topic. ×
| inadaptable(useless, unfit, inapplicable) | |
| inane | |
| inapplicable(useless, unfit) | |
| incapacitated(useless, unfit) | |
| ludicrous(foolish, fantastic, absurd) | |
| mistaken(wrong, fake, false, counterfeit) | |
| nonsensical(wrong, foolish, stupid, crazy) | |
| nullified(meaningless, unsubstantiated, unsupported, annulled) | |
| peaked(mean, weak, sick, green) | |
| poor(bad, inadequate, ineffective, ineffectual) | |
| preposterous(foolish, unreasonable, absurd, irrational) | |
| ridiculous(foolish, unreasonable, absurd, illogical) | |
| self-contradictory | |
| silly(foolish, unreasonable, absurd, irrational) | |
| stupid(wrong, foolish, crazy, unreasonable) | |
| unsatisfactory(bad, poor, inadequate, ineffective) | |
| unwell(mean, weak, sick, green) | |
| valetudinary | |
| amiss(wrong, false, incorrect, broken) | |
| baneful |
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| APA | Smart Define. (2016). invalid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/invalid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "invalid thesaurus" https://smartdefine.org/invalid/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, invalid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/invalid/thesaurus/synonyms>. |
| MLA | Smart Define. "invalid thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/invalid/thesaurus/synonyms> |