- Definitions|2
- Thesaurus|3.2k
- Abbreviations|0
| diabolical(adjective, evil, crazed, devilish, infernal) | |
| disorderly(adjective, violence, chaotic) | |
| distracted | |
| erratic(adjective, wild, strange, silly, foolish) | |
| extravagant(adjective, violence) | |
| extreme(adjective, strange, stupid, crazy, unreasonable) | |
| fatuitous | |
| fiendish(adjective, evil, controlled, obsessed, crazed) | |
| foolhardy(adjective, silly, foolish, crazy, fantastic) | |
| half-witted(weak, simple, silly, foolish, thoughtless) | |
| haywire(adjective, crazy, broken) | |
| hysteric | |
| improbable | |
| jerky(adjective, weak, simple, knowledge, slang) | |
| meshuga | |
| not right(expression, idiom, crazy, insanity, cuckoo) | |
| odd(adjective, wild, strange, silly, foolish) | |
| off-the-wall(adjective, foolish, unreasonable, illogical) | |
| out of one's mind(adjective, idiom, foolish, ill, irrational) | |
| outlandish(adjective, silly, foolish, ridiculous, absurd) |
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| APA | Smart Define. (2015). insane thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/insane/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "insane thesaurus" https://smartdefine.org/insane/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, insane thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/insane/thesaurus/synonyms>. |
| MLA | Smart Define. "insane thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/insane/thesaurus/synonyms> |