blue

Among other things, blue is a color and a dreary mood. If the blue sky and ocean have turned gray and stormy, you might be blue because your day at the beach is ruined.

Whether it's a primary color or a saddened mood, blue is used often as an adjective for people and things. Blue is a mix of green and purple shades, and it's the favorite color of many. The color blue might bring thoughts of first-place blue ribbons or police officers in blue uniforms, and it colors many flags of the world. Blue is everywhere, but there isn't a lot of blue food unless it's colored with dye. Even blueberries are mostly purple.

Definitions of blue
  1. adjective
    of the color intermediate between green and violet; having a color similar to that of a clear unclouded sky
    “"October's bright blue weather"- Helen Hunt Jackson”
    “a blue flame”
    synonyms: blueish, bluish
    chromatic
    being or having or characterized by hue
  2. noun
    blue color or pigment; resembling the color of the clear sky in the daytime
    “he had eyes of bright blue
    synonyms: blueness
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    types:
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    azure, cerulean, lazuline, sapphire, sky-blue
    a light shade of blue
    powder blue
    a pale blue color with grey in it
    steel blue
    a greyish blue color
    Prussian blue
    a dark greenish-blue color
    dark blue, navy, navy blue
    a dark shade of blue
    aqua, aquamarine, cobalt blue, greenish blue, peacock blue, turquoise
    a shade of blue tinged with green
    purplish blue, royal blue
    a shade of blue tinged with purple
    ultramarine
    a vivid blue to purple-blue color
    type of:
    chromatic color, chromatic colour, spectral color, spectral colour
    a color that has hue
  3. noun
    the sky as viewed during daylight
    “he shot an arrow into the blue
    synonyms: blue air, blue sky, wild blue yonder
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    type of:
    sky
    the atmosphere and outer space as viewed from the earth
  4. verb
    turn blue
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    type of:
    color, colour, discolor, discolour
    change color, often in an undesired manner
  5. noun
    blue clothing
    “she was wearing blue
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    type of:
    article of clothing, clothing, habiliment, vesture, wear, wearable
    a covering designed to be worn on a person's body
  6. noun
    any organization or party whose uniforms or badges are blue
    “the Union army was a vast blue
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    types:
    Union Army
    the northern army during the American Civil War
    type of:
    organisation, organization
    a group of people who work together
  7. adjective
    used to signify the Union forces in the American Civil War (who wore blue uniforms)
    “a ragged blue line”
    Synonyms:
    northern
    in or characteristic of a region of the United States north of (approximately) the Mason-Dixon line
  8. adjective
    filled with melancholy and despondency
    “lonely and blue in a strange city”
    synonyms: depressed, dispirited, down, down in the mouth, downcast, downhearted, gloomy, grim, low, low-spirited
    dejected
    affected or marked by low spirits
  9. adjective
    causing dejection
    “a blue day”
    synonyms: dark, dingy, disconsolate, dismal, drab, drear, dreary, gloomy, grim, sorry
    cheerless, depressing, uncheerful
    causing sad feelings of gloom and inadequacy
  10. adjective
    characterized by profanity or cursing
    blue language”
    synonyms: blasphemous, profane
    dirty
    (of behavior or especially language) characterized by obscenity or indecency
  11. adjective
    suggestive of sexual impropriety
    “a blue movie”
    blue jokes”
    synonyms: gamey, gamy, juicy, naughty, racy, risque, spicy
    sexy
    marked by or tending to arouse sexual desire or interest
  12. adjective
    belonging to or characteristic of the nobility or aristocracy
    “a blue family”
    blue blood”
    “the blue-blooded aristocracy”
    synonyms: aristocratic, aristocratical, blue-blooded, gentle, patrician
    noble
    of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times
  13. adjective
    morally rigorous and strict
    synonyms: puritanic, puritanical
    nonindulgent, strict
    characterized by strictness, severity, or restraint
  14. noun
    the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic
    synonyms: Amytal, amobarbital sodium, blue angel, blue devil
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    type of:
    amobarbital
    a barbiturate with sedative and hypnotic effects; used to relieve insomnia and as an anticonvulsant
  15. noun
    any of numerous small butterflies of the family Lycaenidae
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    type of:
    lycaenid, lycaenid butterfly
    any of various butterflies of the family Lycaenidae
  16. noun
    used to whiten laundry or hair or give it a bluish tinge
    synonyms: blueing, bluing
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    type of:
    dye, dyestuff
    a usually soluble substance for staining or coloring e.g. fabrics or hair
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