307 entries under adjective topic. ×
| bedridden(mean, weak, sick, feeble) | |
| bizarre | |
| counterfeit(fake, sham, phony, bogus) | |
| dead(meaningless, obsolete, unsubstantiated, unsupported) | |
| displeasing | |
| down(mean, weak, sick, green) | |
| eccentric | |
| farcical | |
| fictitious(wrong, fake, false, counterfeit) | |
| fruitless(meaningless, unsubstantiated, unsupported, annulled) | |
| idiotic | |
| imaginary(wrong, fake, false, counterfeit) | |
| imprecise | |
| indisposed(mean, weak, ill, sick) | |
| lame(poor, false, inadequate, insufficient) | |
| loose(weak, wrong, unhealthy, absurd) | |
| meaningless(false, unreasonable, senseless, absurd) | |
| misleading(wrong, fake, false, counterfeit) | |
| outlandish | |
| repudiated |
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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> |