Non Compos Mentis Definition

nŏn kŏmpəs mĕntĭs
Not of sound mind and hence not legally competent.
American Heritage Medicine
Mentally incompetent.
Webster's New World Law

(law, but also seeing wider use) Insane; not of sound mind; not in control of one's self.

One who is not legally competent.
American Heritage Medicine
Not of sound mind; mentally incapable of handling one's own affairs.
Webster's New World

Origin of Non Compos Mentis

  • Latin nōn compos mentis nōn not compos in control mentis genitive sing. of mēns mind

    From American Heritage Dictionary of the English Language, 5th Edition

  • Latin

    From Wiktionary

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