| psychotic(adjective, insane, unwell, cuckoo) | |
| lunatic(adjective, insane, sane, unwell) | |
| unbalanced(adjective, insane, sane, unwell) | |
| insane(adjective, sane, unwell, cuckoo) | |
| deranged(adjective, insane, unwell, psychiatric) | |
| disturbed(crazy, sick, insane, psychiatric) | |
| loco(adjective, slang, crazy, sick) | |
| nuts(adjective, slang, insane, sane) | |
| non compos mentis(expression, adjective, law, insane) | |
| fruity(adjective, slang, insane, sane) | |
| maniac(adjective, crazy, sick, insane) | |
| unstable(adjective, insane, psychiatric) | |
| mindless(insane, psychiatric) | |
| nutsy(insane, psychiatric) | |
| psychiatric |
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| APA | Smart Define. (2015). mentally ill thesaurus. Retrieved September 28, 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 28, 2026). |
| Harvard | Smart Define 2015, mentally ill thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/mentally_ill/thesaurus/synonyms>. |
| MLA | Smart Define. "mentally ill thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/mentally_ill/thesaurus/synonyms> |