warn Meaning, definition in Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of "warn" - English Dictionary

See all translations

warnverb [I or T]

uk   /wɔːn/  us   /wɔːrn/
B1 to make someone realize a possible danger or problem, especially one in the future: [+ obj + to infinitive ] We were warned not to eat the fish which might give us a slight stomach upset. [+ obj + (that) ] Have you warned them (that) there will be an extra person for dinner? I was warned against/off going to the east coast because it was so full of tourists. There were signs warning of fog as soon as we got onto the motorway. This particular curry is extremely hot - be warned! Put that ball down and come over here, Laura - I'm warning you (= I will punish you if you do not)!
More examples
(Definition of warn from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of warn?
Add Cambridge dictionaries to your browser to your website

Definitions of “warn” in other dictionaries

Word of the Day
hurdle

a frame or fence for jumping over in a race

Word of the Day

When’s dinner? (Words for different meals)
When’s dinner? (Words for different meals)
by Kate Woodford,
July 22, 2015
Here at ‘About Words’ we’re always happy to get ideas for posts that we could write. A reader of this blog recently asked for a post on the language of meals and we thought this an excellent idea. If you are reading this post and have an idea for a topic or

Read More 

exoskeleton noun
exoskeleton noun
July 27, 2015
a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.

Read More