non compos mentis

non com·pos men·tis

adj \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

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

Related Words: dotty, fey, loopy, off, potty [chiefly British], teched (or tetched), touched; aberrant, delirious, delusional, delusionary, disordered, disturbed, neurotic, obsessive-compulsive, paranoiac (also paranoic), paranoid (also paranoidal), schizoid, schizophrenic, sociopathic; eccentric, odd, oddball, pixilated (also pixillated), queer, strange; foolish, senseless, witless; irrational, unreasonable; amok (or amuck), ape, ballistic, bananas, berserk, nuclear; depressed; distracted, distraught, frantic, frenzied, haywire, hysterical (also hysteric), raving, wigged-out; fixated, monomaniac, monomaniacal, obsessed

Near Antonyms: clear, lucid, rational, reasonable; judicious, sensible, wise; healthy, normal, well-adjusted; unneurotic

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