Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “blue”

blue

adjective     /bluː/
COLOUR A1 being the same colour as the sky when there are no clouds: a dark blue jacket Common coloursLess common colours
SAD informal sadFeeling sad and unhappy
SEX about sex: a blue joke/movie → See also black and blue, once in a blue moonRelating to sex and sexual desireRude and cheeky
(Definition of blue adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “blue” in other dictionaries

Word of the Day

limber up

to do gentle exercises to stretch the muscles in order to prepare the body for more active physical exercise

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More