- Not of sound mind; not having the regular use of reason; hence, also, as a noun, an idiot; a lunatic; one devoid of reason, either by nature or from accident.
- Not of sound mind; not having the regular use of reason; hence, also, as a noun, an idiot; a lunatic; one devoid of reason, either by nature or from accident.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). non compos mentis. Retrieved September 26, 2026, from http://smartdefine.org/non_compos_mentis/definitions/2037086 |
| Chicago | Webster's. 2011. "non compos mentis" http://smartdefine.org/non_compos_mentis/definitions/2037086 (accessed September 26, 2026). |
| Harvard | Webster's 2011, non compos mentis, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/non_compos_mentis/definitions/2037086>. |
| MLA | Webster's. "non compos mentis" 27 May 2011. Web. 26 September 2026. <http://smartdefine.org/non_compos_mentis/definitions/2037086> |