| mad | |
| outrageous(adjective, gentle, mild) | |
| crazy(adjective, strange, fantastic, unrealistic) | |
| silly(adjective, foolish, absurd, giddy) | |
| wild | |
| senseless(adjective, silly, foolish, unsound, meaningless) | |
| paranoid | |
| goofy | |
| foolish(adjective, sound, wise, unsound, nonsensical) | |
| insane(adjective, sound) | |
| visceral | |
| fatuous(adjective, stupid) | |
| daydreamer | |
| preposterous(adjective, ridiculous, bizarre) | |
| self-destructive | |
| capricious(adjective, reasonable, predictable, given) | |
| insensible | |
| unrealistic(adjective, foolish, practical, unsound, believable) | |
| unreasonable(adjective, correct, right, foolish, unsound) | |
| frivolous(adjective, silly, trivial) |
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| APA | Smart Define. (2016). sensible thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sensible/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "sensible thesaurus" https://smartdefine.org/sensible/thesaurus/antonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, sensible thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sensible/thesaurus/antonyms>. |
| MLA | Smart Define. "sensible thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/sensible/thesaurus/antonyms> |