be compos mentis

(redirected from is compos mentis)

be compos mentis

Sane or mentally competent. The phrase is Latin for "of sound mind." I doubt that Travis was compos mentis when he committed that crime.
See also: compo

be ˌcompos ˈmentis

(from Latin, formal or humorous) having full control of your mind: Are you sure she was fully compos mentis when she said that?
See also: compo
References in periodicals archive ?
My aunty is 91, my mother is 89 and my aunt still walks every day and is compos mentis and my family is Polish so I come from good old Polish stock.