Meaning of “blue” in the English Dictionary

"blue" in British English

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uk /bluː/ us /bluː/

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

  • She's got fair hair and blue eyes.
  • She wore a pale blue hat.
  • For weeks we had cloudless blue skies.
  • I caught a tantalizing glimpse of the sparkling blue sea through the trees.
  • Police are looking for a small blue car with the registration number K17 EMW.

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.
noun [ U ] uk /ˈbluː.nəs/ us /ˈbluː.nəs/


uk /bluː/ us /bluː/

blue noun (COLOUR)

A2 [ C or U ] a blue colour


  • I'm very fond of blue.
  • There's a lot of blue in our house.
  • What a beautiful shade of blue!
  • I'd prefer a darker shade of blue.
  • I love the blue that they paint their houses.


(Definition of “blue” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"blue" in American English

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blueadjective, noun [ C/U ]

us /blu/

blue adjective, noun [ C/U ] (COLOR)

(of) the color of the sky on a clear, bright day:

She has blue eyes.


blueadjective [ -er/-est only ]

us /blu/

blue adjective [ -er/-est only ] (SAD)

sad; unhappy:

I don’t know what’s wrong – I just feel blue.

(Definition of “blue” from the Cambridge Academic Content Dictionary © Cambridge University Press)