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Synonyms

of sound mind

American  
[uhv sound mahynd] / əv ˈsaʊnd ˈmaɪnd /

idiom

  1. capable of rational thought and decision making, unimpaired by mental illness, drugs, dementia, etc.; compos mentis.


Etymology

Origin of of sound mind

First recorded in 1605–15

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.

There are some non-vacation-related items for your to-do list, as well: create power-of-attorney documents while your husband is of sound mind and has the legal capacity to sign off on them.

From MarketWatch • Apr. 9, 2026

Although she is of sound mind, Guthrie has physical ailments that keep her from walking very far and needs to take a daily medication that she appears to be without.

From Los Angeles Times • Feb. 5, 2026

In 2016, Michael sent a cease-and-desist letter to Saks’s management explaining that his mother wasn’t of sound mind and that Kwatra was abusing his position.

From The Wall Street Journal • Dec. 25, 2025

There’s no reason to doubt whether Hackman was of sound mind at that time.

From Salon • Jul. 30, 2025

“This reassures me that I was of sound mind never to have children.”

From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin