11 entries under expression topic. ×
| of unsound mind(adjective, idiom, law, foolish) | |
| not all there(adjective, idiom, law, unstable) | |
| mentally ill(adjective, law, mad, insane) | |
| out to lunch(adjective, idiom, unstable, disturbed) | |
| bereft of reason | |
| deprived of reason | |
| in the ozone(idiom, crazy, hysterical, psychotic) | |
| nutty as a fruitcake(adjective, idiom, law, crazy) | |
| nobody home(unstable, disturbed, erratic, unhinged) | |
| nutty as fruitcake(idiom, crazy, hysterical, psychotic) | |
| overenthusiastic person(noun, crazy, loony) |
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| APA | Smart Define. (2015). non compos mentis thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/non_compos_mentis/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "non compos mentis thesaurus" https://smartdefine.org/non_compos_mentis/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, non compos mentis thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/non_compos_mentis/thesaurus/synonyms>. |
| MLA | Smart Define. "non compos mentis thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/non_compos_mentis/thesaurus/synonyms> |