| wacky(adjective, slang, sane) | |
| balmy | |
| barmy | |
| certifiable | |
| crazed(adjective, unwell) | |
| daffy(adjective, informal, sane) | |
| eccentric(off, dotty) | |
| gaga(adjective, informal, sane) | |
| neurotic | |
| not all there(expression, adjective, idiom, crazy, sick) | |
| off one's rocker(adjective, idiom, sane, unwell) | |
| psycho(adjective, unwell) | |
| pyschological | |
| stark raving mad(expression, adjective, idiom, crazy, sick) | |
| unhinged(adjective, cuckoo, neurotic) | |
| addled | |
| around the bend(adjective, idiom, sane) | |
| bughouse | |
| catatonic | |
| crackpot |
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| APA | Smart Define. (2015). mentally ill thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/mentally_ill/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "mentally ill thesaurus" https://smartdefine.org/mentally_ill/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, mentally ill thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/mentally_ill/thesaurus/synonyms>. |
| MLA | Smart Define. "mentally ill thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/mentally_ill/thesaurus/synonyms> |