Non compos mentis

phrase/nˈɑnkɑmpoʊzmɛntɪs/law
Definition
Not of sound mind; not having control of one's mind.
Etymology
From Latin non (“not”) + compos (“in control, having mastery”) + mentis (“of mind”).
Synonyms
non compos
In a sentence
  • The court found the testator non compos mentis when he signed the later will.
Tags
Source
commonplace words.md
added 2026-10-09