Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “blue”

See all translations

blue

adjective uk   /bluː/ us  

blue adjective (COLOUR)

A1 of the colour of the sky without clouds on a bright day, or a darker or lighter type of this: a faded blue shirt pale blue eyes Her hands were blue with cold (= slightly blue because of the cold).
More examples

blue adjective (SEXUAL)

showing or mentioning sexual activity in a way that offends many people: a blue joke a blue movie/film His humour is a bit too blue for my tastes.

blue adjective (SAD)

C2 [after verb] informal feeling or showing sadness: He's been a bit blue since she left him.
See also

blue adjective (MEAT)

( also extra-rare) (of meat) cooked so that it is still very red
blueness
noun [U] uk   /ˈbluː.nəs/ us  

blue

noun uk   /bluː/ us  

blue noun (COLOUR)

A2 [C or U] a blue colour
More examples

blue noun (SPORTS)

[C] UK a person who has played a sport for Oxford University against Cambridge University or for Cambridge University against Oxford University, or the title given to him or her for this
(Definition of blue from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of blue?
Add Cambridge dictionaries to your browser to your website

Definitions of “blue” in other dictionaries

Word of the Day

christmassy

typical of Christmas, or happy because it is Christmas

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