non compos mentis

non com·pos men·tis   (nŏn kŏm'pəs měn'tĭs)    adj.  Not of sound mind and hence not legally responsible; mentally incompetent. [Latin nōn compos mentis : nōn, not + compos, in control + mentis, genitive sing. of mēns, mind.]

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.”

non compos mentis 

Main Entry: non com·pos men·tis
Pronunciation: 'nän-'käm-p&s-'men-t&s
Function: adjective
Etymology: Latin, literally, not having mastery of one's mind
: not of sound mind : lacking mental ability to understand the nature, consequences, and effect of a situation or transaction

Main Entry: non com·pos men·tis
Pronunciation: "nän-"käm-p&-'sment-&s, "nOn-
Function: adjective
: not of sound mind

non compos mentis non com·pos men·tis (nŏn kŏm'pəs měn'tĭs)
adj.
Not of sound mind and hence not legally responsible; mentally incompetent.