as in stable
having full use of one's mind and control over one's actions
went to court to prove that her grandmother was no longer compos mentis and needed a legal guardian
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Recent Examples of compos mentis
Second, and more important, while Biden’s voice may be faltering, and some of his sentences rest incomplete, there is little question which candidate is less compos mentis than the other.
—
Jack Rakove, Chicago Tribune, 18 July 2024
Too a Real President meeting yesterday largely succeeded in its immediate goal: News coverage showed Trump in the act of president-ing with the air of a man who is, if not a stable genius, at least compos mentis.
—Jonathan Chait, Daily Intelligencer, 10 Jan. 2018
Jack Rakove, Chicago Tribune, 18 July 2024
Too a Real President meeting yesterday largely succeeded in its immediate goal: News coverage showed Trump in the act of president-ing with the air of a man who is, if not a stable genius, at least compos mentis.
—Jonathan Chait, Daily Intelligencer, 10 Jan. 2018
Recent Examples of Synonyms for compos mentis
Adjective
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With a high, stable energy supply, the ship could support a larger number of these power-hungry containers, giving operators greater flexibility to handle cargo demand.—
Sujita Sinha,
Interesting Engineering,
9 Mar. 2026
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Obituaries, property records and data broker profiles can quietly reveal life changes that make someone appear financially stable yet emotionally vulnerable.—
Kurt Knutsson,
FOXNews.com,
8 Mar. 2026
Adjective
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Another theory is that lucid dreams might be too much like waking consciousness to help with solving problems.—
Veronique Greenwood,
Time,
26 Feb. 2026
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Heldman and Nicholson’s lucid, intelligent script thus assigns characters very different, more nuanced motivations from those we are used to in iterations of this story.—
Guy Lodge,
Variety,
20 Feb. 2026
Adjective
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The agency said Tuesday that normal operations continue at the camp.—
Morgan Lee,
Los Angeles Times,
8 Mar. 2026
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Most of the shifts and deformations gradually returned to normal by six months after return to Earth.—
Rachael Seidler,
Space.com,
7 Mar. 2026
Adjective
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The flavors in the beef carpaccio antipasti with Pioppini mushrooms, green apple chunks, and celeriac were beautifully balanced.—
Condé Nast,
Condé Nast Traveler,
5 Mar. 2026
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Military cooperation between the two has remained constrained, and trade and investment flows are eclipsed by those with several Gulf states, as Beijing seeks to maintain balanced ties across the Middle East.—
John Liu,
CNN Money,
4 Mar. 2026
Adjective
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If so, please provide the timeline and a comprehensive list of all exhibits under consideration, and the rational for removal.—
Madison Dapcevich,
Outside,
6 Mar. 2026
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That’s a rational explanation, Kershaw says, for Skubal pitching just once in the WBC.—
Bill Shaikin,
Los Angeles Times,
3 Mar. 2026
Adjective
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Eating at consistent times earlier in the day can support the clock and healthy blood sugar levels.—
Merve Ceylan,
Health,
8 Mar. 2026
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Learn how to build healthy financial habits today to set your children up for greater success in the future.—
Tom Huddleston Jr.,
CNBC,
7 Mar. 2026
Cite this Entry
“Compos mentis.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/compos%20mentis. Accessed 11 Mar. 2026.
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