blue

adjective
\ ˈblü \
bluer; bluest

Definition of blue

 (Entry 1 of 3)

1 : of the color whose hue is that of the clear sky : of the color blue (see blue entry 2 sense 1) a blue jacket her bright blue eyes The house is blue with white shutters.
2a : bluish the blue haze of tobacco smoke
b : discolored by or as if by bruising blue with cold
c : bluish gray a blue cat
3a : low in spirits : melancholy has been feeling blue
b : marked by low spirits : depressing a blue funk things looked blue
4 : wearing blue the blue team
5 of a woman : learned, intellectual … the ladies were very blue and well-informed …— W. M. Thackeray
6 : puritanical … a blue Sunday city …— James Street
7a : profane, indecent a blue movie
b : off-color, risqué blue jokes
8 music : of, relating to, or used in blues (see blues sense 3) a blue song
9 US politics : tending to support Democratic candidates or policies As has become increasingly clear over the past few general elections, with their red states and blue states, an American Presidential campaign is no longer truly national.— Hendrik Hertzberg — compare purple sense 3, red sense 5
blue in the face
: extremely exasperated argued until he was blue in the face

blue

noun

Definition of blue (Entry 2 of 3)

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 Blue is his favorite color. shades of blue
2a : a pigment or dye that colors blue
b : bluing adding blue to the laundry
3a : blue clothing or cloth will be wearing blue
b blues plural : a blue costume or uniform wearing their dress blues
4a : a Union soldier in the American Civil War
b often capitalized : the Union army the Blue versus the Gray
5a(1) : sky
(2) : the far distance disappeared into the blue
b : sea
6 : a blue object
7 : bluestocking praised the writings of her fellow blues
8 biology : any of numerous small chiefly blue butterflies (family Lycaenidae)
9 : bluefish fishing for blues
11 physics : one of the three colors (see color entry 1 sense 15) that quarks have in the theory of quantum chromodynamics One cannot have a single quark on its own because it would have a color (red, green, or blue). Instead, a red quark has to be joined to a green and a blue quark by a "string" of gluons (red + green + blue = white). Such a triplet constitutes a proton or a neutron.— Stephen Hawking
out of the blue
: without advance notice : unexpectedly the job offer came out of the blue

blue

verb
blued; blueing or bluing; blues

Definition of blue (Entry 3 of 3)

transitive verb

: to make (something) blue in color: such as
a : to dye, tint, or paint (something) blue Last, the generation of the grandmothers, in immaculately blued hair…— John Updike Tattoos blued his upper arms.— Jerry Spinelli
b : to heat (iron or steel) to about 550 to 600 degrees Fahrenheit so that it acquires a protective bluish coating the blued barrel of the gun Between banks shrouded with snow, the river gleamed darkly, like blued steel with gold chips of sunlight dancing on each riffle.— Pete Bodo

intransitive verb

: to turn blue their blueing fingers
blue the air
informal
: to curse angrily He sliced the air with his fists and blued the air with his mouth.— Steve Kelley I have been stealing my father's copy (of Massachusetts Wildlife) for a long time, but last week he found an issue on my desk and blued the air a bit.— Stephen King Donovan

Keep scrolling for more

Other Words from blue

Adjective

bluely adverb
blueness noun

Examples of blue in a Sentence

Adjective

shocked at the blue banter she heard on that satellite-radio talk show a cold, dreary day always leaves me blue

Noun

Her favorite color is blue. a mixture of blues and greens They sailed off into the blue.
See More

Recent Examples on the Web: Adjective

Each of the tests had a different number of yellow or blue lights. John Wenz, Popular Mechanics, "Bees Are the Math Whizzes of the Insect Kingdom," 6 Feb. 2019 The past two Democrats to give the response were white men who made direct appeals to blue-collar voters who have fled the party. Tamar Hallerman, The Seattle Times, "‘Terrified’ Stacey Abrams prepares to counterpunch Trump’s State of Union," 5 Feb. 2019 But white light is the inclusion of red, green, and blue light. Marina Liao, Marie Claire, "Do Sleep Glasses Actually Work?," 5 Feb. 2019 With a gorgeous natural color palette of yellows, greens, golds, and pale blue, her pictures and samples are giving me inspiration. Taylor Mead, House Beautiful, "Summer Thornton Is Designing a Hotel and the Mood Board Looks Bananas," 1 Feb. 2019 But blue-collar voters care more about having their jobs back. Rich Danker, WSJ, "How China Exploits Anti-Soviet Money Policy," 21 Jan. 2019 Democrats even managed to claw back some of Trump’s 2016 gains in Midwestern states, like Wisconsin and Michigan, that were billed as the archetypal places for blue-collar Trumpism to succeed. Zack Beauchamp, Vox, "The 9 thinkers who made sense of 2018’s chaos," 27 Dec. 2018 But the notion that he was elected by gritty blue collar people who were unlike typical Republicans is a myth. Jennifer Wright, Harper's BAZAAR, "What Will Actually Happen to Trump?," 19 Dec. 2018 General Motors will stop production at five factories in the U.S. and Canada next year, cutting more than 14,000 blue-collar and salaried jobs in a bid to trim costs. Recode Staff, Recode, "Recode Daily: Google spends $1 billion on a 52-acre office park in space-constrained Silicon Valley," 27 Nov. 2018

Recent Examples on the Web: Noun

Her mother was a harmonica player in a blues outfit, her father a manager of bands. Carina Chocano, Vogue, "Elisabeth Moss on Jordan Peele’s Us, Handmaid’s New Season, and Why She Loves Real Housewives," 14 Feb. 2019 The brand has three collections with 10 shades each, ranging from deep blues to classic reds and universal nudes. Pia Velasco, Good Housekeeping, "This Liquid Lipstick Is $7 and Stays Put All Day," 8 Feb. 2019 One clip included Crew being pulled around on a blue sled. Jennifer Aldrich, Country Living, "Joanna Gaines Bundled Up 7-Month-Old Crew in This Top-Rated Baby Snowsuit You Can Buy," 5 Feb. 2019 But there seems to be more happening than history repeating and blue-leaning states staying blue, according to Democratic and Republican operatives across the region. Ella Nilsen, Vox, "Bustos will focus her attention on Middle America ahead of 2020.," 29 Nov. 2018 When not working, Allen was by all accounts a talented guitarist and released a blues rock album in 2013. Peter Bright, Ars Technica, "Paul Allen—Microsoft co-founder, Seahawks owner, and space pioneer—dies at 65," 16 Oct. 2018 Dressed in a navy blue suit and baby blue shirt, Mr. Stone sat with other members of his legal team in a courtroom packed with reporters as Robert Buschel told the judge that Mr. Stone pleads not guilty. ... Sadie Gurman, WSJ, "Roger Stone Enters Not Guilty Plea to Charges in Mueller Indictment," 29 Jan. 2019 Here's how to deal with loneliness when you inevitably get hit with the blues. 1. Colleen Stinchcombe, Woman's Day, "How to Deal With Loneliness and Feelings of Isolation," 11 Jan. 2019 The colors match the landscape: lots of cream and white, with browns, grays, and muted greens and blues. Maggie Burch, House Beautiful, "French Provincial Design Has Always Set the Bar For Casual Elegance," 11 Jan. 2019

Recent Examples on the Web: Verb

Stop painting the same models blue and calling it revolutionary. Sandra Salibian | Wwd, latimes.com, "Designer Jeremy Scott responds to social media controversy about Moschino campaign post," 26 June 2018 Stop painting the same models blue and calling it revolutionary. Sandra Salibian | Wwd, latimes.com, "Designer Jeremy Scott responds to social media controversy about Moschino campaign post," 26 June 2018 Stop painting the same models blue and calling it revolutionary. Sandra Salibian | Wwd, latimes.com, "Designer Jeremy Scott responds to social media controversy about Moschino campaign post," 26 June 2018 Stop painting the same models blue and calling it revolutionary. Sandra Salibian | Wwd, latimes.com, "Designer Jeremy Scott responds to social media controversy about Moschino campaign post," 26 June 2018 Stop painting the same models blue and calling it revolutionary. Sandra Salibian | Wwd, latimes.com, "Designer Jeremy Scott responds to social media controversy about Moschino campaign post," 26 June 2018 Stop painting the same models blue and calling it revolutionary. Sandra Salibian | Wwd, latimes.com, "Designer Jeremy Scott responds to social media controversy about Moschino campaign post," 26 June 2018 Stop painting the same models blue and calling it revolutionary. Sandra Salibian | Wwd, latimes.com, "Designer Jeremy Scott responds to social media controversy about Moschino campaign post," 26 June 2018 Stop painting the same models blue and calling it revolutionary. Sandra Salibian | Wwd, latimes.com, "Designer Jeremy Scott responds to social media controversy about Moschino campaign post," 26 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blue.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of blue

Adjective

13th century, in the meaning defined at sense 1

Noun

14th century, in the meaning defined at sense 1

Verb

1606, in the meaning defined at transitive sense

History and Etymology for blue

Adjective, Noun, and Verb

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

Keep scrolling for more

Learn More about blue

Dictionary Entries near blue

blude

bludge

bludgeon

blue

blue acara

blue agave

blue alert

Statistics for blue

Last Updated

16 Feb 2019

Look-up Popularity

Time Traveler for blue

The first known use of blue was in the 13th century

See more words from the same century

Keep scrolling for more

More Definitions for blue

blue

adjective

English Language Learners Definition of blue

 (Entry 1 of 2)

: having the color of the clear sky
: sad or unhappy

blue

noun

English Language Learners Definition of blue (Entry 2 of 2)

: the color of the clear sky
literary : the sky or the sea

blue

noun
\ ˈblü \

Kids Definition of blue

 (Entry 1 of 2)

1 : the color of the clear daytime sky
2 : blue clothing or cloth
out of the blue
: suddenly and unexpectedly

Other Words from blue

bluish adjective

blue

adjective
bluer; bluest

Kids Definition of blue (Entry 2 of 2)

1 : of the color of the sky : of the color blue blue ink
2 : sad sense 1 Why are you so blue?

blue

adjective
\ ˈblü \
bluer; bluest

Medical Definition of blue

 (Entry 1 of 2)

: of the color blue

blue

noun

Medical Definition of blue (Entry 2 of 2)

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

Keep scrolling for more

More from Merriam-Webster on blue

Rhyming Dictionary: Words that rhyme with blue

Thesaurus: All synonyms and antonyms for blue

Spanish Central: Translation of blue

Nglish: Translation of blue for Spanish Speakers

Britannica English: Translation of blue for Arabic Speakers

Comments on blue

What made you want to look up blue? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

esteemed in general opinion

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!