blue

[ bloo ]

/ blu /

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See synonyms for: blue / blues / blueness on Thesaurus.com

noun

the pure color of a clear sky; the primary color between green and violet in the visible spectrum, an effect of light with a wavelength between 450 and 500 nanometers.

bluing.

something having a blue color: Place the blue next to the red.

a person who wears blue or is a member of a group characterized by some blue symbol: Tomorrow the blues will play the browns.

(often initial capital letter) a member of the Union army in the American Civil War or the army itself.Compare gray¹ (def. 13).

bluestocking.

blue ribbon (def. 1).

any of several blue-winged butterflies of the family Lycaenidae.

Printing. blueline.

the blue,

the sky.
the sea.
the remote distance: They've vanished into the blue somewhere.

adjective, blu·er, blu·est.

of the color of blue: a blue tie.

(initial capital letter) of or relating to the Union army in the American Civil War.

(of the skin) discolored by cold, contusion, fear, or vascular collapse.

depressed in spirits; dejected; melancholy: She felt blue about not being chosen for the team.

holding or offering little hope; dismal; bleak: a blue outlook.

characterized by or stemming from rigid morals or religion: statutes that were blue and unrealistic.

marked by blasphemy: The air was blue with oaths.

(of an animal's pelage) grayish-blue.

indecent; somewhat obscene; risqué: a blue joke or film.

Politics.

relating to, supporting, or belonging to the Democratic Party in the United States; Democratic: The county effectively turned blue, with all 38 district judges elected being Democrats.Compare red¹ (def. 14).
British. politically conservative.

verb (used with object), blued, blu·ing or blue·ing.

to make blue; dye a blue color.

to tinge with bluing: Don't blue your clothes till the second rinse.

verb (used without object), blued, blu·ing or blue·ing.

to become or turn blue.

OTHER WORDS FOR blue

1 azure, cerulean, sapphire.

14 despondent, unhappy, morose, doleful, dispirited, sad, glum, downcast.

15 gloomy, dispiriting.

16 righteous, puritanical, moralistic, strait-laced.

See synonyms for blue on Thesaurus.com

OPPOSITES FOR blue

14 happy.

See antonyms for blue on Thesaurus.com

QUIZ

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Question 1 of 7

The rainy weather could not ________ my elated spirits on my graduation day.

affect

effect

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Idioms about blue

blue in the face, exhausted and speechless, as from excessive anger, physical strain, etc.: I reminded him about it till I was blue in the face.

out of the blue, suddenly and unexpectedly: The inheritance came out of the blue as a stroke of good fortune.

Origin of blue

First recorded in 1250–1300; Middle English blewe, from Anglo-French blew, bl(i)u, bl(i)ef “blue, livid, discolored,” Old French blo, blau (French bleu ), from unattested Germanic blǣwaz; compare Old English blǣwen, contraction of blǣhǣwen “deep blue, perse,” Old Frisian blāw, Middle Dutch blā(u), Old High German blāo (German blau ), Old Norse blār

OTHER WORDS FROM blue

blue·ly, adverbblue·ness, nounhalf-blue, adjectiveun·blued, adjective

WORDS THAT MAY BE CONFUSED WITH blue

blew, blue

Words nearby blue

blubbery, blucher, bludge, bludgeon, bludger, blue, blue agave, blue alert, Blue and the Gray, Blue Army, blue-arsed fly

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use blue in a sentence

Among only developed countries, blue states would be in the top five and red states would be in the top 10.
Trump says US Covid-19 deaths would be low if you excluded blue states. That’s wrong.|German Lopez|September 17, 2020|Vox
Even in a blue-leaning state like Minnesota, the best Democratic gerrymander likely secures five safe seats while the best Republican one secures six.
America needs a democratic revolution|Matthew Yglesias|September 17, 2020|Vox
Meanwhile, the blue tilt of currently GOP-held Senate seats in Maine and North Carolina is putting Democratic control of the Senate into play for the first time since they lost it in the 2014 midterms.
Our Forecast: A Brewing Current Could Lift Biden … or Swamp Him|Nick Fouriezos|September 17, 2020|Ozy
If you take the blue states out, we’re at a level that I don’t think anybody in the world would be at.
Trump blames blue states for the coronavirus death toll — but most recent deaths have been in red states|Philip Bump|September 16, 2020|Washington Post

Cosmetically, the watches come in gray, silver, gold, blue, and red metallic finishes.
Everything announced at Apple’s ‘Time Flies’ event today|rhhackettfortune|September 15, 2020|Fortune
Clad in a blue, striped button-down, a silver watch adorning his left wrist, Huckabee beams on the cover.
Huckabee 2016: Bend Over and Take It Like a Prisoner!|Olivia Nuzzi|January 8, 2015|DAILY BEAST
Yeah, the “Giant man-puppy” that is Gronkowski won't hold a sexual candle to the blue-eyed dreamboat.
‘A Gronking to Remember’ Speed Read: 8 Naughtiest Bits|Emily Shire|January 7, 2015|DAILY BEAST
GOP leaders refused; they saw that Duke was pulling blue-collar Democrats to the party.
The Louisiana Racists Who Courted Steve Scalise|Jason Berry|January 3, 2015|DAILY BEAST
It denotes the person that puts on the badge, puts on the blue uniform, and goes into the streets to put their life at risk.
Cop Families Boo De Blasio at NYPD Graduation|Michael Daly|December 30, 2014|DAILY BEAST
They looked up into the blue sky as the helicopters flew over in a lost man formation.
Choking Back Tears, Thousands of Cops Honor Fallen Officer Ramos|Michael Daly|December 28, 2014|DAILY BEAST
In pursuing his alchemical researches, he discovered Prussian blue, and the animal oil which bears his name.
The Every Day Book of History and Chronology|Joel Munsell
Mary is fair as the morning dew— Cheeks of roses and ribbons of blue!
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
His nose was hooked and rather large, his eyes were blue, bright as steel, and set a trifle wide.
St. Martin's Summer|Rafael Sabatini
The most promising of the methods which have been devised are cryoscopy, the methylene-blue test, and the phloridzin test.
A Manual of Clinical Diagnosis|James Campbell Todd
He said no more in words, but his little blue eyes had an eloquence that left nothing to mere speech.
St. Martin's Summer|Rafael Sabatini

British Dictionary definitions for blue (1 of 2)

blue

/ (bluː) /

noun

any of a group of colours, such as that of a clear unclouded sky, that have wavelengths in the range 490–445 nanometres. Blue is the complementary colour of yellow and with red and green forms a set of primary coloursRelated adjective: cyanic

a dye or pigment of any of these colours

blue cloth or clothingdressed in blue

a sportsperson who represents or has represented Oxford or Cambridge University and has the right to wear the university colour (dark blue for Oxford, light blue for Cambridge)an Oxford blue
the honour of so representing one's university

British an informal name for Tory

any of numerous small blue-winged butterflies of the genera Lampides, Polyommatus, etc: family Lycaenidae

archaic short for bluestocking

slang a policeman

archery a blue ring on a target, between the red and the black, scoring five points

a blue ball in snooker, etc

another name for blueing

Australian and NZ slang an argument or fighthe had a blue with a taxi driver

Also: bluey Australian and NZ slang a court summons, esp for a traffic offence

Australian and NZ informal a mistake; error

out of the blue apparently from nowhere; unexpectedlythe opportunity came out of the blue

into the blue into the unknown or the far distance

adjective bluer or bluest

of the colour blue

(of the flesh) having a purple tinge, as from cold or contusion

depressed, moody, or unhappy

dismal or depressinga blue day

indecent, titillating, or pornographicblue films

bluish in colour or having parts or marks that are bluisha blue fox; a blue whale

rare aristocratic; noble; patriciana blue family See blue blood

US relating to, supporting, or representing the Democratic PartyCompare red 1 (def. 18)

verb blues, blueing, bluing or blued

to make, dye, or become blue

(tr) to treat (laundry) with blueing

(tr) slang to spend extravagantly or wastefully; squander

Derived forms of blue

bluely, adverbblueness, noun

Word Origin for blue

C13: from Old French bleu, of Germanic origin; compare Old Norse blār, Old High German blāo, Middle Dutch blā; related to Latin flāvus yellow

British Dictionary definitions for blue (2 of 2)

Blue

Bluey

/ (bluː) /

noun

Australian informal a nickname for a person with red hair

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with blue

blue

In addition to the idioms beginning with blue

blue funk, in a
blue in the face

also see:

between a rock and a hard place (devil and deep blue sea)
black and blue
bolt from the blue
have the blues
into thin air (the blue)
like greased lightning (a blue streak)
once in a blue moon
out of a clear blue sky
talk one's arm off (a blue streak
until blue in the face)

blue

OTHER WORDS FOR blue

OPPOSITES FOR blue

Idioms about blue

Origin of blue

OTHER WORDS FROM blue

WORDS THAT MAY BE CONFUSED WITH blue

Words nearby blue

learn more about blue

Words related to blue

How to use blue in a sentence

British Dictionary definitions for blue (1 of 2)

Derived forms of blue

Word Origin for blue

British Dictionary definitions for blue (2 of 2)

Bluey

Other Idioms and Phrases with blue