Dictionary.com

compos mentis

[ kohm-pohs men-tis; English kom-puhs men-tis ]
/ ˈkoʊm poʊs ˈmɛn tɪs; English ˈkɒm pəs ˈmɛn tɪs /
Save This Word!

adjective Latin.
sane; mentally sound (used especially in a legal context). Compare non compos mentis.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.

Origin of compos mentis

Literally, “being in full possession of one's mind”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use compos mentis in a sentence

British Dictionary definitions for compos mentis

compos mentis
/ Latin (ˈkɒmpəs ˈmɛntɪs) /

adjective
(postpositive) of sound mind; sane
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
FEEDBACK