150 entries under insanity topic. ×
| bedlamite(noun, adjective, person, keen, warm) | |
| maniac(noun, adjective, person, mad, sick) | |
| erratic(adjective, characteristic, beat, character, unusual) | |
| imprudent(adjective, characteristic, weak, simple, wild) | |
| irresponsible(adjective, characteristic, simple, careless, wild) | |
| moonstruck(adjective, characteristic, informal, strange, silly) | |
| peculiar(adjective, characteristic, unusual, wild, strange) | |
| fantastic(adjective, characteristic, weak, simple, wild) | |
| nut(noun, person, slang, wise, radical) | |
| ape(adjective, characteristic, strange, silly, foolish) | |
| ding-a-ling(noun, person, slang, wise, fanatic) | |
| dingbat(noun, person, slang, wise, fanatic) | |
| fruity(adjective, characteristic, slang, strange, silly) | |
| non compos mentis(noun, expression, adjective, idiom, law) | |
| unworkable(adjective, characteristic, silly, foolish, fantastic) | |
| impracticable(adjective, characteristic, rough, wild, silly) | |
| loon(noun, person, informal, wise, fanatic) | |
| madman(noun, adjective, person, mad, odd) | |
| madwoman(noun, person, fanatic, loony) | |
| unglued(adjective, upset, characteristic, wild, strange) |
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| APA | Smart Define. (2016). crazy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/crazy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "crazy thesaurus" https://smartdefine.org/crazy/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, crazy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/crazy/thesaurus/synonyms>. |
| MLA | Smart Define. "crazy thesaurus" 3 April 2016. Web. 24 September 2026. <https://smartdefine.org/crazy/thesaurus/synonyms> |