compos mentis

[kohm-pohs men-tis, kom-puhs men-tis]

adjective

Latin.

1. sane; mentally sound (used especially in a legal context).

compos mentis

/ ˈkɒmpəs ˈmɛntɪs /

adjective

1. (postpositive) of sound mind; sane

Word History and Origins

Origin of compos mentis¹

Literally, “being in full possession of one's mind”