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Definitions

intelligent

[in-tel-i-juhnt] / ɪnˈtɛl ɪ dʒənt /
ADJECTIVE
very smart
Synonyms
STRONGEST
astute brainy bright brilliant creative imaginative inventive knowledgeable original perceptive rational resourceful smart well-informed wise
WEAK
able acute alert alive all there apt calculating capable clever comprehending deep discerning enlightened exceptional highbrow ingenious instructed keen knowing penetrating perspicacious profound quick quick-witted ready reasonable responsible sage sharp thinking together understanding whiz witty
Antonyms
STRONGEST
dark dull ignorant normal old stupid typical unaware uncreative uneducated unimaginative unintelligent uninventive unreasonable unresourceful worn
WEAK
foolish idiotic imbecile

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.

And they must seem intelligent without actually being enterprising enough to stand out from the crowd of near-identical films.

From Salon • Mar. 29, 2026

“It’s just really difficult to make any kind of intelligent decisions in that environment.”

From The Wall Street Journal • Mar. 26, 2026

Ritchson, a former model and “American Idol” hopeful, is best known for portraying the powerful and highly intelligent leading man of Prime Video’s “Reacher.”

From Los Angeles Times • Mar. 23, 2026

One called him as "highly intelligent" and "very good at quickly getting to grips with a problem".

From BBC • Mar. 23, 2026

But he didn't think Haupt was intelligent, and felt he was overly interested in money.

From Nazi Saboteurs by Samantha Seiple

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.