97 entries under noun topic. ×
| crazy(adjective, person, light, weak) | |
| lunatic(adjective, person, weak, simple) | |
| nutty(adjective, light, weak, simple) | |
| nuts(adjective, slang, wild, strange) | |
| batty(adjective, light, slang, wild) | |
| crackpot(adjective, person, foolish, crazy) | |
| dotty(adjective, weak, simple, strange) | |
| cuckoo(adjective, slang, wild, silly) | |
| psychotic(adjective, person, silly, foolish) | |
| kook(person, slang, sick, wise) | |
| maniac(adjective, person, wrong, wild) | |
| psycho(adjective, person, slang, crazy) | |
| screwball(adjective, slang, wild, silly) | |
| deranged(adjective, wild, silly, foolish) | |
| madman(adjective, person, crazy, mad) | |
| mental(adjective, slang, informal, foolish) | |
| nut(slang, crazy, sick, wise) | |
| loco(adjective, slang, insane, sane) | |
| weirdo(slang, wise) | |
| bedlamite(adjective, person, keen, warm) |
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| APA | Smart Define. (2015). loony thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/loony/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, loony thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>. |
| MLA | Smart Define. "loony thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms> |