compos mentis
Americanadjective
adjective
Etymology
Origin of compos mentis
Literally, “being in full possession of one's mind”
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
To be sure, we can’t know how much of any given day the young Mr. Khamenei is compos mentis.
From The Wall Street Journal ● Jul. 12, 2026
Each of these stories was, in some measure, autobiographical, and each a reassurance that, despite my worrying, I was still compos mentis.
From The New Yorker ● Apr. 29, 2019
Don compos mentis: Of very stable genius mind.
From Washington Post ● Dec. 20, 2018
"When I reached the shore, I was a few notches off compos mentis," he says.
From BBC ● Feb. 1, 2016
If anyone proposes another match race between these two super horses,” wrote a reporter after the race, “henceforth, he will be tried in the morning for treason, mutiny, mopery and non compos mentis.'''’
From "Seabiscuit: An American Legend" by Laura Hillenbrand
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.