Dictionary

non compos mentis

adjective non com·pos men·tis \ˌnän-ˌkäm-pəs-ˈmen-təs, ˌnōn-\

Definition of NON COMPOS MENTIS

:  not of sound mind

Examples of NON COMPOS MENTIS

  1. <will seek to prove that the elderly tycoon was non compos mentis when he dictated that will>

Origin of NON COMPOS MENTIS

Latin, literally, not having mastery of one's mind
First Known Use: 1607
Medical Dictionary

non compos mentis

adjective non com·pos men·tis \ˌnän-ˌkäm-pə-ˈsment-əs, ˌnōn-\

Medical Definition of NON COMPOS MENTIS

:  not of sound mind

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