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.

I just needed “Disclosure Day” to have the same spark of intelligent life.

From Los Angeles Times • Jun. 10, 2026

The Fukushima mayor said officials also saw the bear drinking water from a tap, adding it may have turned the handle itself, and describing it as being "extremely intelligent."

From BBC • Jun. 9, 2026

Another "extremely intelligent" bear filmed chasing people in Fukushima is still evading officials, as Japan deals with a rise in bear encounters.

From BBC • Jun. 9, 2026

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

The glittering green eyes, examining Jeremy as carefully as he was examining their owner, looked like a pair of intelligent emeralds.

From "Jeremy Thatcher, Dragon Hatcher" by Bruce Coville

Vocabulary lists containing intelligent

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