43 entries under adjective topic. ×
| mad(crazy, insane) | |
| unsound(strong, well, flimsy) | |
| insane(sensible, foolish, ill) | |
| feeble(strong, fit, ineffective) | |
| unhealthy | |
| illogical | |
| infirm(weak, sick) | |
| unreasonable | |
| irrational(rational, senseless, illogical) | |
| incomplete | |
| ill | |
| insecure(strong, steady, dangerous, precarious) | |
| invalid(worthless, unfounded) | |
| rickety | |
| silent | |
| weak | |
| senseless | |
| baseless | |
| corrupt(good, vicious, moral, rotten) | |
| mistaken(correct, right, wrong, incorrect) |
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| APA | Smart Define. (2016). sound thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sound/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "sound thesaurus" https://smartdefine.org/sound/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, sound thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sound/thesaurus/antonyms>. |
| MLA | Smart Define. "sound thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/sound/thesaurus/antonyms> |