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.

Intelligent, funny, curious and humble, Gosling’s Grace is essentially a clone of the character Matt Damon played in 2015’s “The Martian,” a geek you want to grab an intergalactic beer with.

From Los Angeles Times • Mar. 18, 2026

The study, published in the ACM journal Transactions on Interactive Intelligent Systems, also highlights a problem with how AI design tools are typically assessed.

From Science Daily • Mar. 15, 2026

The current system Tesla sells in China has been branded as Intelligent Assisted Driving and offers more limited capabilities than the Full Self-Driving system offered in the U.S.

From MarketWatch • Feb. 6, 2026

This is an edition of the Intelligent Investor newsletter, where Jason Zweig writes twice monthly about investment strategy and how to think about money.

From The Wall Street Journal • Jan. 27, 2026

Intelligent people are likelier than less intelligent ones to escape those causes of high mortality in traditional New Guinea societies.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

Vocabulary lists containing intelligent

More Positive Words to Describe a Person

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Positive Words to Describe People, List 1

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

List 5

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!