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.

They warn that it could take a surprisingly long time for S&P 500 earnings to “grow into” today’s lofty valuations if price/earnings multiples return to more normal historical levels.

From The Wall Street Journal • Jun. 10, 2026

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

From Science Daily • Jun. 6, 2026

The company amended its IPO prospectus this week to warn investors that access to water—or lack thereof—is becoming a concern for the company.

From Barron's • Jun. 5, 2026

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

From MarketWatch • Jun. 5, 2026

“Now, please, silence may be the wiser choice. We do not wish to warn whatever took her that we are hunting it.”

From "Half Upon a Time" by James Riley

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!