79 entries under adjective topic. ×
| unintelligent(foolish, unsound) | |
| unsound | |
| whimsical(fanciful, playful) | |
| imprudent(kind, prudent) | |
| irrational(sound, foolish, rational, senseless) | |
| reckless | |
| unwise(foolish, prudent, unsound) | |
| balmy(violent, insane) | |
| crazed | |
| excessive(moderate, low) | |
| farcical | |
| foolhardy | |
| harebrained | |
| illogical | |
| impractical(foolish, practical, unsound, unrealistic) | |
| indiscreet(foolish, unsound) | |
| ludicrous(ridiculous, absurd) | |
| nonsensical | |
| demented | |
| dizzy(scatterbrained, flighty) |
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| APA | Smart Define. (2016). sensible thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sensible/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "sensible thesaurus" https://smartdefine.org/sensible/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, sensible thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sensible/thesaurus/antonyms>. |
| MLA | Smart Define. "sensible thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/sensible/thesaurus/antonyms> |