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.

Although I will warn you – this is what my parents used to do to me and it was not a popular decision.

From BBC • Jun. 13, 2026

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 more that the likes of Robbins and Sandberg and Witherspoon warn that women miss the AI train at their peril, the more it seems like the new Leaning In.

From Salon • Jun. 10, 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

“I’ll be fine. Remember, Little Pumpkin, your mother’s spirit is watching over you. She’ll warn you of any danger.”

From "A Girl Named Disaster" by Nancy Farmer

Vocabulary lists containing warn

"The Secret Water"

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!

"The Black Ferris" by Ray Bradbury

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!

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!