non compos mentis

[ nohn -kohm-pohs -men-tis; English non -kom-puhs -men-tis ]
/ ˈnoʊn ˈkoʊm poʊs ˈmɛn tɪs; English ˈnɒn ˈkɒm pəs ˈmɛn tɪs /

adjective Latin.

not of sound mind; mentally incapable of managing one's affairs.

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for non compos mentis

non compos mentis
/ Latin (ˈnɒn ˈkɒmpəs ˈmɛntɪs) /

adjective

mentally incapable of managing one's own affairs; of unsound mind

Word Origin for non compos mentis

Latin: not in control of one's mind
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for non compos mentis

non compos mentis
[ nŏn kŏm′pəs mĕntĭs ]

adj.

Not of sound mind and hence not legally responsible; mentally incompetent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Cultural definitions for non compos mentis

non compos mentis
[ (non kom-puhs men-tis) ]

A phrase used to describe someone who is out of his or her mind and therefore not legally responsible for his or her actions: “It was determined by the court that the killer was non compos mentis.” From Latin, meaning “not having control of the mind.”

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.