First Known Use: 1607
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
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Origin of NON COMPOS MENTIS
Latin, literally, not having mastery of one's mind
Related to NON COMPOS MENTIS
- Synonyms
- balmy, barmy [chiefly British], bats, batty, bedlam, bonkers, brainsick, bughouse [slang], certifiable, crackbrained, cracked, crackers, crackpot, cranky [dialect], crazed, crazy, cuckoo, daffy, daft, demented, deranged, fruity [slang], gaga, haywire, kooky (also kookie), loco [slang], loony (also looney), loony tunes (or looney tunes), lunatic, mad, maniacal (also maniac), mental, meshuga (or meshugge also meshugah or meshuggah), moonstruck, insane, nuts, nutty, psycho, psychotic, scatty [chiefly British], screwy, unbalanced, unhinged, unsound, wacko (also whacko), wacky (also whacky), wud [chiefly Scottish]
- Antonyms
- balanced, compos mentis, sane, sound, uncrazy
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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