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.

Beyond the search for intelligent life, observations of interstellar visitors help scientists better understand the physical characteristics of these objects as they travel through the Solar System.

From Science Daily • Jun. 23, 2026

Houdon’s Franklin, though clearly an old man, looks amused and engaged, with a youthful gaze, but also highly intelligent and judicious, sociable but not entirely available, a bit enigmatic.

From The Wall Street Journal • Jun. 12, 2026

His family described him as a much-loved son and brother who was kind, intelligent and talented.

From BBC • Jun. 6, 2026

An "extremely intelligent" bear that injured four people in northern Japan remains at large as of Friday, after apparently unlatching a window while evading capture and turning on a water tap, officials said.

From Barron's • Jun. 5, 2026

“You are too intelligent for this behavior. I expected more of you.”

From "The Night Circus" by Erin Morgenstern

Vocabulary lists containing intelligent

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