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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.

But for a robot to carry out lots of varied, complex tasks, it needs an intelligent brain powered by a different form of AI, called agentic AI.

From BBC • Apr. 7, 2026

“But I think we are intelligent enough to know what we need to do.”

From Los Angeles Times • Apr. 7, 2026

Huawei’s intelligent automotive solution business revenue increased 72% to 45 billion yuan last year.

From The Wall Street Journal • Mar. 31, 2026

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

They were “visited daily by many of the nation’s most-respected and intelligent citizens,” including celebrities, intellectuals, leaders in the media and politics.

From "American Spirits" by Barb Rosenstock