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.

UBS analysts keep a buy rating on the stock but warn clients in a note that the consensus forecast of a 90-basis-point margin expansion at CSL’s plasma-product business is too high.

From The Wall Street Journal • Jun. 9, 2026

They warn it could sink prosperity in Switzerland, where large swathes of the economy -- from medical research to construction to healthcare -- depend heavily on foreign labour, primarily from the surrounding EU.

From Barron's • Jun. 9, 2026

The researchers also warn that amoebae can act as living shelters for other harmful microbes.

From Science Daily • Jun. 6, 2026

Investors hoping for a rebound will have to wait until next year or the year after, they warn.

From MarketWatch • 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!