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1

blue

play
adjective \ˈblü\

Simple Definition of blue

  • : having the color of the clear sky

  • : sad or unhappy

Source: Merriam-Webster's Learner's Dictionary

Full Definition of blue

bluer

bluest

  1. 1 :  of the color blue

  2. 2 a :  bluish <the blue haze of tobacco smoke> b :  discolored by or as if by bruising <blue with cold> c :  bluish gray <a blue cat>

  3. 3 a :  low in spirits :  melancholy b :  marked by low spirits :  depressing <a blue funk> <things looked blue>

  4. 4 :  wearing blue

  5. 5 of a woman :  learned, intellectual

  6. 6 :  puritanical

  7. 7 a :  profane, indecent <blue movie> b :  off-color, risqué <blue jokes>

  8. 8 :  of, relating to, or used in blues <a blue song>

  9. 9 :  tending to support Democrats in a general election <blue states>

bluely

adverb

blueness

noun

blue in the face

  1. :  extremely exasperated

Examples of blue in a sentence

  1. <shocked at the blue banter she heard on that satellite-radio talk show>

  2. <a cold, dreary day always leaves me blue>



Origin and Etymology of blue

Middle English, from Anglo-French blef, blew, of Germanic origin; akin to Old High German blāo blue; akin to Latin flavus yellow


First Known Use: 13th century


2

blue

noun

Simple Definition of blue

  • : the color of the clear sky

  • the blue : the sky or the sea

Source: Merriam-Webster's Learner's Dictionary

Full Definition of blue

  1. 1 :  a color whose hue is that of the clear sky or that of the portion of the color spectrum lying between green and violet

  2. 2 a :  a pigment or dye that colors blue b :  bluing

  3. 3 a :  blue clothing or cloth b plural :  a blue costume or uniform

  4. 4 a :  a Union soldier in the American Civil War b often capitalized :  the Union army

  5. 5 a (1) :  sky (2) :  the far distance <disappeared into the blue> b :  sea

  6. 6 :  a blue object

  7. 7 :  bluestocking

  8. 8 :  any of numerous small chiefly blue butterflies (family Lycaenidae)

  9. 9 :  bluefish

  10. 10 :  blue cheese

out of the blue

  1. :  without advance notice :  unexpectedly <the job offer came out of the blue>

Examples of blue in a sentence

  1. Her favorite color is blue.

  2. a mixture of blues and greens

  3. They sailed off into the blue.



13th Century

First Known Use of blue

13th century


3

blue

verb

Definition of blue

blued

blueing

or

bluing

  1. transitive verb
  2. :  to make blue

  3. intransitive verb
  4. :  to turn blue



1606

First Known Use of blue

1606



BLUE Defined for Kids

1

blue

play
noun \ˈblü\

Definition of blue for Students

  1. 1 :  the color of the clear daytime sky

  2. 2 :  blue clothing or cloth

  3. 3 :  sky 1

  4. 4 :  sea 1

bluish

adjective

out of the blue

  1. :  suddenly and unexpectedly




2

blue

play
adjective

Definition of blue for Students

bluer

bluest

  1. 1 :  of the color of the sky :  of the color blue <blue ink>

  2. 2 :  sad 1 <Why are you so blue?>




Medical Dictionary

1

blue

play
adjective \ˈblü\

Medical Definition of blue

bluer

;

bluest

  1. :  of the color blue




2

blue

noun

Medical Definition of blue

  1. 1:  a color whose hue is that of the clear sky or that of the portion of the color spectrum lying between green and violet

  2. 2:  a pigment or dye that colors blue—see prussian blue





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