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.

It is also believed the bear "turned on the water tap" to drink, he added, describing it as "extremely intelligent".

From Barron's • Jun. 5, 2026

He suggested that discovering intelligent life beyond Earth could force people to look beyond their differences.

From BBC • Jun. 4, 2026

On Tuesday, a psychological expert testified that the defendant displayed no evidence of a psychotic disorder, that he was intelligent, "controls what he says" and shows "few emotions".

From Barron's • Jun. 4, 2026

Ms. Field gives a sharp, intelligent interpretation of the character.

From The Wall Street Journal • Jun. 1, 2026

Thus according to the common-sense view the science of extraterrestrial beings, if they exist and if they are intelligent, must, where it overlaps with our science, agree with it.

From "The Invention of Science" by David Wootton

Vocabulary lists containing intelligent

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