Definitions

warn

[wawrn] / wɔrn /

VERB

give notice of possible occurrence

Synonyms

STRONGEST

address advise alert caution hint inform instruct notify order predict prepare prompt recommend remind signal suggest summon tell threaten urge

STRONG

acquaint admonish advocate apprise clue counsel deprecate direct dissuade enjoin exhort forbid forearm forewarn guide post prescribe remonstrate reprove tip

WEAK

clue in cry wolf fill in give fair warning give the high sign give warning lay it out make aware put on guard tip off wise up

Antonyms

STRONGEST

conceal discourage disorganize dissuade hide ignore prevent

STRONG

allow approve commend compliment laud misguide mislead neglect permit praise withhold

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.

South Australia is home to a booming koala population, but researchers warn that this apparent conservation success could eventually turn into a serious problem.

From Science Daily • Jun. 8, 2026

Analysts warn that a severe El Niño could raise global food commodity prices by up to 9%.

From MarketWatch • Jun. 8, 2026

SpaceX amended its IPO prospectus to warn investors that access to water is becoming a concern for the company.

From Barron's • Jun. 5, 2026

Both warn that AI will significantly disrupt the white-collar workforce.

From The Wall Street Journal • Jun. 5, 2026

“Really,” she said disgustedly, “if the cute janitor wanted to warn you, he should have provided a few more details. Names, dates—something you could go to the police with.”

From "Found" by Margaret Peterson Haddix

Vocabulary lists containing warn

"The Secret Water"

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"The Black Ferris" by Ray Bradbury

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Tasting the Sky

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!