Dictionary

non compos mentis en · ADJ

Etymology

From Latin non (“not”) + compos (“in control, having mastery”) + mentis (“of mind”).

Meanings

1. (not-comparable, often) Insane; not of sound mind; not in control of oneself.
   • Shakespeare was really a Literary Syndicate. Rainproof is demonstrably non compos mentis on that subject, and his infirmity is spreading. 1927, Ernest Bramah [pseudonym; Ernest Brammah Smith], Max Carrados Mysteries:

Relateds

compos mentis · nincompoop

Synonyms

non compos