307 entries under adjective topic. ×
| untrue(wrong, fake, false, counterfeit) | |
| feeble(mean, weak, sick, green) | |
| flawed(weak, wrong, false, inadequate) | |
| ill(mean, weak, sick, green) | |
| ineffective(poor, inadequate, useless, void) | |
| irrational(wrong, false, foolish, crazy) | |
| untenable(useless, reasoning, unfit) | |
| weak(mean, bad, poor, delicate) | |
| ailing(mean, weak, sick, green) | |
| inadequate(bad, poor, false, useless) | |
| inconsistent(reasoning, absurd, irrational, arbitrary) | |
| nugatory(worthless, trifling, petty, unacceptable) | |
| null and void(expression, idiom, unsound, worthless) | |
| sophistic(correct, foolish, true, unreasonable) | |
| unconvincing(poor, inadequate, ineffective, ineffectual) | |
| unhealthy(mean, weak, sick, green) | |
| unreasonable(foolish, fantastic, reasoning, irrational) | |
| useless(void, unsound, trifling, petty) | |
| debilitated(mean, weak, sick, green) | |
| frail(mean, weak, sick, green) |
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| APA | Smart Define. (2016). invalid thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/invalid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "invalid thesaurus" https://smartdefine.org/invalid/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, invalid thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/invalid/thesaurus/synonyms>. |
| MLA | Smart Define. "invalid thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/invalid/thesaurus/synonyms> |