- Definitions|2
- Thesaurus|3.2k
- Abbreviations|0
414 entries under adjective topic. ×
| extreme(strange, stupid, crazy, unreasonable) | |
| fatuitous | |
| fiendish(evil, controlled, obsessed, crazed) | |
| foolhardy(silly, foolish, crazy, fantastic) | |
| haywire(crazy, broken) | |
| improbable | |
| jerky(weak, simple, knowledge, slang) | |
| meshuga | |
| odd(wild, strange, silly, foolish) | |
| off-the-wall(foolish, unreasonable, illogical) | |
| out of one's mind(idiom, foolish, ill, irrational) | |
| outlandish(silly, foolish, ridiculous, absurd) | |
| outrageous(silly, foolish, violence, fantastic) | |
| perturbed | |
| puerile(silly, foolish, fantastic, unwise) | |
| quirky | |
| screwball(silly, foolish, crazy, mad) | |
| short-sighted(weak, simple, silly, foolish) | |
| unearthly(knowledge, ability) | |
| unglued(upset, wild, silly, foolish) |
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| APA | Smart Define. (2015). insane thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/insane/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "insane thesaurus" https://smartdefine.org/insane/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, insane thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/insane/thesaurus/synonyms>. |
| MLA | Smart Define. "insane thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/insane/thesaurus/synonyms> |