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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Rudolph Giuliani, the former mayor of New York City, is in critical but stable condition at a hospital, his spokesman said Sunday.—
Michael R. Sisak,
Chicago Tribune,
4 May 2026
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Rob Carr / Getty Images Before starting her stable, DeVaux climbed her way up the ranks, beginning as a stable worker for the late Chuck Simon before becoming an assistant trainer for Chad Brown.—
Rohan Nadkarni,
NBC news,
3 May 2026
Adjective
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Twenty lucid dreamers, including Bark-Huss, spent multiple nights in the lab, trying to work out puzzles in their sleep.—
Shayla Love,
New Yorker,
1 May 2026
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The Islamic Revolutionary Guard Corps claims that the leader is lucid and exerting total control over the country that his office commands.—
Timothy Nerozzi,
The Washington Examiner,
1 May 2026
Adjective
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There’s a Marshalls on the Strip, a flashy glassy Marshalls being scaled by King Kong–like blinking M&M’s, but this was a normal strip-mall Marshalls.—
Olivia Kan-Sperling,
Artforum,
2 May 2026
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Temperatures will return closer to 'normal' beginning on Sunday afternoon, with highs near 60 degrees.—
Ron Smiley,
CBS News,
2 May 2026
Adjective
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An independent redistricting commission — transparent, balanced and insulated from the very political pressures that have corrupted this process.—
Daryl Campbell,
Sun Sentinel,
6 May 2026
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Still, the majority of testers found it to be balanced and consistent throughout.—
Catherine Jessee,
Southern Living,
6 May 2026
Adjective
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Evans and his backers were rational actors inside an irrational system.—
Big Think,
Big Think,
1 May 2026
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By any rational examination, there are more people on Rikers than need to be for public safety.—
Jonathan Lippman,
New York Daily News,
29 Apr. 2026
Adjective
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For most healthy adults, the occasional cola—such as a few servings per week—is unlikely to affect the kidneys in any measurable way.—
MD Published,
Verywell Health,
2 May 2026
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Unlike colon or breast cancer, there is no routine screening for pancreatic cancer in healthy people.—
Aria Bendix,
NBC news,
2 May 2026
Cite this Entry
“Compos mentis.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/compos%20mentis. Accessed 8 May. 2026.
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