Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “beware”

See all translations

beware

verb [only in infinitive and imperative] uk   /bɪˈweər/ us    /-ˈwer/
C1 [I or T] used to warn someone to be very careful about something or someone: Beware salespeople who promise offers that seem too good to be true. You should beware of undercooked food when staying in hot countries. Beware of falling asleep while sunbathing. [I] used on signs to warn people of something dangerous: Beware of the dog. Beware - poisonous chemicals.
More examples
(Definition of beware from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of beware?
Add Cambridge dictionaries to your browser to your website

Definitions of “beware” in other dictionaries

Word of the Day

cold snap

a short period of cold weather

Word of the Day

Cleavage proves divisive in Cambridge’s words of 2014

by Alastair Horne,
December 19, 2014
​​​​ Other dictionaries may choose faddish novelties as their words of the year, but here at Cambridge, we like to do something different. We look for the words that have seen sudden surges in searches over the course of the year – words that have been baffling users of English and driven them

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More