Thesaurus.com
Dictionary.com
Definitions

of sound mind

[uhv sound mahynd] / əv ˈsaʊnd ˈmaɪnd /
ADJECTIVE
compos mentis
Synonyms
WEAK
all there balanced lucid mentally sound rational sound stable well-balanced
ADJECTIVE
sane
Synonyms
STRONGEST
balanced fair-minded healthy intelligent levelheaded logical lucid normal prudent rational sensible sober wise
WEAK
all there both oars in water commonsensical compos mentis discerning fit having all marbles in one's right mind judicious moderate oriented playing with full deck right right-minded sagacious sage sapient self-possessed sound steady together well
Antonyms
STRONGEST
foolish irrational stupid unbalanced unintelligent unrealistic unreasonable unwise
WEAK
crazy insane unsound unstable

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.

While she is of sound mind without cognitive issues, Guthrie does have physical ailments that keep her from walking far, officials said.

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

He is of sound mind, but he might succumb to someone who offers him companionship, and helps him with his physical needs until he passes, possibly in the next few years.

From MarketWatch • Dec. 1, 2025

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

From Salon • Jul. 30, 2025

Before Sandy’s even talked to him to see if he’s of sound mind.

From "I'll Give You the Sun" by Jandy Nelson