warn Meaning in the Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of “warn” in the English Dictionary

"warn" in British English

See all translations

warnverb [I or T]

uk   /wɔːn/  us   /wɔːrn/
B1 to make someone ​realize a ​possibledanger or ​problem, ​especially one in the ​future: [+ obj + to infinitive ] We were warned not toeat the ​fish which might ​upsetourstomachs. [+ obj + (that) ] Have you warned them (that) there will be an ​extraperson for ​dinner? I was warned against/off going to the ​eastcoast because it was so ​full of ​tourists. The ​boatingarea is ​marked with ​buoys to warn offswimmers. There were ​signs warning offog as ​soon as we got onto the ​motorway. This ​particularcurry is ​extremelyhot - be warned! Put that ​ball down now, Laura - I'm warning you (= I will ​punish you if you do not)!
More examples
(Definition of warn from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"warn" in American English

See all translations

warnverb [I/T]

 us   /wɔrn/
to make someone ​aware of a ​possibledanger or ​problem so that it can be ​avoided: [T] I warned her not to ​waste her ​money on that ​movie. [T] We’d been warned that we should ​lockourcars in the ​parking lot. [I] The ​radio warned all ​day of the ​badweather coming.
(Definition of warn from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of warn?
Add Cambridge dictionaries to your browser to your website
Word of the Day

forage

to go from place to place searching, especially for food

Word of the Day

Meerkat meme
Meerkat meme
by Colin McIntosh,
September 03, 2015
Meerkats are not new to popular culture (they appear in the folk tales of the San people of the Kalahari), but their arrival in the public’s consciousness, at least in the UK and the US, is a relatively recent phenomenon. Meerkats are small, sociable Southern African mammals that live in large family

Read More 

parklet noun
parklet noun
August 31, 2015
a public outdoor space that may be associated with a local business but where anyone can sit Pop-up cafes in NY are what’s actually called parklets in many other places around the country.

Read More