blue

adjective
\ ˈblü How to pronounce blue (audio) \
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

The swimming pool deepens into a cavernous fountain, blue light bending within the tunnel of mirrors. Travis Deshong, Washington Post, "With ‘Lawn,’ the National Building Museum brings summer indoors," 3 July 2019 Several Maryland skinks have blue iridescent tails when young. Ellen Nibali, baltimoresun.com, "Garden Q&A: My clematis has spots and what is this blue worm-like thing?," 3 July 2019 The blue light, explained Benes, decreases the level of bilirubin and helps yellowish bruises disappear faster. Cindy Krischer Goodman, sun-sentinel.com, "Cool new health wearables do everything from killing head lice to curing incontinence," 2 July 2019 Eight blue LEDs, an upgrade from four on the previous model, tell you how much juice the charger itself has left. Julianne Ross, CNN Underscored, "Over 20,000 people love these portable chargers," 2 July 2019 The money could jumpstart automation in a highly labor-intensive business that has been a rare source of well-paying blue-collar jobs over the past decade. Konrad Putzier, WSJ, "Momentum Builds for Automation in Construction," 2 July 2019 At one point, Ivanka Trump and Kushner stopped to enter one of the blue huts straddling the border between the two Koreas. Jonathan Lemire, Fortune, "‘Let’s Do It.’ 3 Hours at the DMZ and a Made-for-TV Moment," 30 June 2019 All season, there was no doubt about the Clippers’ dream free agency scenario — the one in which both Kawhi Leonard, the NBA’s best two-way player, and Kevin Durant, its most effortless scorer, agreed to join forces in red and blue. Andrew Greif, latimes.com, "Kawhi Leonard, Kevin Durant in free-agency mix for Clippers," 29 June 2019 And white flower arrangements, some with red and blue accents, filled the front of the room. Sydney Czyzon, Milwaukee Journal Sentinel, "'He was a role model': Community remembers Milwaukee Officer Kou Her," 29 June 2019

Recent Examples on the Web: Noun

The multi-Grammy Award-winning blues-rock duo comprised of vocalist and guitarist Dan Auerbach and drummer Patrick Carney, stopped touring in 2015. Jessica Kegu, CBS News, "The Black Keys open up about why they haven't toured in years," 26 June 2019 Trump’s choice of that location may be surprising to those who look at an election map of Florida and see Orange County colored in solid Democratic blue. Steven Lemongello, orlandosentinel.com, "Why is President Trump’s campaign coming to Orlando? It’s key to winning Florida, experts say.," 13 June 2019 Enter for a chance to see the Steve Miller Band with Marty Stuart at MECU Pavilion, July 18th Steve Miller Band, the six piece formed way back in 1966 and continue to thrill audiences globally with their classic sounding blues rock. Denisa Protani, baltimoresun.com, "Steve Miller Band with Marty Stuart," 3 June 2019 The store offers a modest menu of hot and cold drinks, and an extensive vinyl collection spanning folk, blues, soul, funk, rock, country, disco, and jazz. Jharna Thakkar, National Geographic, "Geneva's hidden gems: the ultimate weekend itinerary," 30 May 2019 There have been sterling silver protractors, and tin cans, and even a greenhouse, as well as bone china to-go coffee cups in Tiffany blue. Reed Krakoff, Town & Country, "Tiffany & Co. Wants to Change the Rules of How to Wear a Diamond," 27 Nov. 2018 The famous model sisters Gigi and Bella Hadid were there, the former in browns, Bella in a soft blue. Fox News, "Rihanna surprises fans with Gigi and Bella Hadid in her Savage X Fenty runway show," 13 Sep. 2018 McQuarrie, purposefully dressed in the patriotic blue, white and red colors of the French flag, jostled to get to the center of the big pic. Rhonda Richford, The Hollywood Reporter, "The 'Mission Impossible — Fallout' Cast on How Paris Inspired the Latest Action-Packed Installment," 13 July 2018 Schon — who honed his melodic, expressive style as an aficionado of blues and soul — thinks his old band mate would be an ideal partner for an R&B-style project. Brian Mccollum, Detroit Free Press, "Detroit still has open arms for Journey as band arrives with Def Leppard," 12 July 2018

Recent Examples on the Web: Verb

Give classic orange and blue a dose of edge with abstract prints and a hit of dark à la Samantha Angelo. Laurel Benedum, ELLE Decor, "7 Decadent Rooms Inspired By This Weekend's Chicest Celebrity Outfits," 4 June 2019 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

6 Jul 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 How to pronounce blue (audio) \

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 How to pronounce blue (audio) \
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

to form ideas or theories about something

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
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!