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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These advanced technologies ensure the router maintains a high data throughput and more stable performance, even when in a congested network.—
Mark Sparrow,
Forbes.com,
31 May 2026
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An outcome would be more stable and adaptable behavior of the rover in granular environments.—
Leonard David,
Space.com,
31 May 2026
Adjective
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Broken down into five lucid chapters, the letter argues against a robotic future, and for a socially just one.—
Brittany Allen,
Literary Hub,
26 May 2026
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After the disturbing death of Reverend Bryce at the end of last week’s episode of Widow’s Bay, Tom, Wyck, and Patricia search his office for clues that might explain why this seemingly lucid man of the cloth suddenly hung himself.—
Jen Chaney,
Vulture,
20 May 2026
Adjective
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My vet rechecked it a week later, and her potassium is now normal, but her phosphorous is too high.—
Dr. John De Jong,
Boston Herald,
31 May 2026
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But at the State meet, officials alternated between sticking to the normal race schedule and running the 2 mile early in the meet and the mile later as had been the case in 1974 at the State meet in Bakersfield.—
Scott M. Reid,
Oc Register,
30 May 2026
Adjective
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But while the budget is technically balanced, its foundation is precarious.—
Ryan Macasero,
Mercury News,
3 June 2026
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Why Your Bones Change After 50 For most of your adult life, bone is in a state of constant, balanced turnover.—
Allison Palmer
Updated June 3,
Sacbee.com,
3 June 2026
Adjective
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For most of investing history, that discomfort was rational.—
Ethan Stone,
USA Today,
29 May 2026
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For all the prior cinematic depictions of storming bunkers and camaraderie under fire, Pressure offers us the quiet heroism of rational restraint in the figure of James Stagg, who weathered his inner storms and bore the courage to be disliked.—
Daniel Jonah Wolpert,
NPR,
29 May 2026
Adjective
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Yes, that extension will probably be worth anywhere from $15-17 million per season — a healthy bump from the $9-million cap hit Makar commanded in ’25-26.—
Sean Keeler,
Denver Post,
31 May 2026
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As a part of a broader effort to help curtail these ill effects, HHS has released a comprehensive advisory report on the harms of screen use and how parents can help promote healthy habits.—
Forbes.com,
Forbes.com,
30 May 2026
Cite this Entry
“Compos mentis.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/compos%20mentis. Accessed 4 Jun. 2026.
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