blue

/blu/

/blu/

Other forms: blues; bluer; bluest; blued; bluing; blueing; bluely

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, 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

   types:

   azure, cerulean, lazuline, sapphire, sky blue, 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

   type of:

   sky

   the atmosphere and outer space as viewed from the earth
4. verb

   turn blue
   type of:

   color, colour, discolor, discolour

   change color, often in an undesired manner
5. noun

   blue clothing
   “she was wearing blue”

   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”

   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

    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
    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

    type of:

    dye, dyestuff

    a usually soluble substance for staining or coloring e.g. fabrics or hair