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Definitions

mental

[men-tl] / ˈmɛn tl /
ADJECTIVE
concerning the mind
Synonyms
STRONGEST
cerebral intellectual psychiatric subjective
STRONG
psychic psychological spiritual
WEAK
clairvoyant ideological imaginative immaterial inner intellective mysterious phrenic psychical rational reasoning subconscious subliminal telepathic thinking thoughtful unreal
Antonyms
STRONGEST
physical
WEAK
body
ADJECTIVE
(Informal) insane
Synonyms
WEAK
bonkers crazy deranged disturbed fruity loco lunatic mad mindless non compos mentis nuts nutsy potty unbalanced unstable
Antonyms
WEAK
balanced sane

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.

He escaped from a mental institution, settled in Southern California, and began falsely claiming that he was a rabbi, a doctor and Albert Einstein’s nephew.

From The Wall Street Journal • Apr. 9, 2026

Ami Ostrovskaia, a Russian university student living in Seoul, says BTS songs "saved her" from a mental breakdown.

From BBC • Apr. 8, 2026

He shook his head as though he were running through a mental inventory.

From Los Angeles Times • Apr. 8, 2026

Other A-Street investments include Great Minds, a curriculum provider behind such programs as Eureka Math; youth mental health startup Cartwheel Care; and AI-powered early reading platform LitLab.

From The Wall Street Journal • Apr. 8, 2026

“Based on the information I have about stars, I am creating a mental image of them in my computer brain.”

From "A Rover's Story" by Jasmine Warga