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

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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.
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Recent Examples on the Web: Adjective

But not everything is a de facto prototype: In the entry hallway, a large-scale black-and-white abstract painting with pops of fiery red and light blue, by Samuel’s artist father, Roger Sandes, takes up one wall. Gisela Williams, ELLE Decor, "The Vivacious 18th-Century Marakesh Medina of Two L.A. Transplants," 28 Dec. 2018 Expecting twins at the time, the father-to-be went with Farrow & Ball's Pink Ground paint on the walls, with the ceiling painted Borrowed Light, one of the brands light shades of blue. Danielle Tullo, House Beautiful, "Gray Malin's Holiday Decor Proves That Coral Is The Best Christmas Color," 12 Dec. 2018 While Chicago remains the Democratic epicenter in Illinois, Democrats are also hoping to turn four red congressional districts blue this year. Tara Golshan, Vox.com, "Illinois results for every midterm race," 8 Nov. 2018 The stunning shot features Prince Harry in a navy tux and Markle in a powder-blue dress, her hand resting over his chest. Christopher Rosa, Glamour, "Meghan Markle and Prince Harry Literally Gifted a Photo of Themselves on Their Royal Tour," 7 Nov. 2018 By contrast, the Queen and Meghan Markle opted for more neutral blue tones. Kayla Keegan, Good Housekeeping, "Sarah Ferguson's Hat at Princess Eugenie's Wedding Is Being Compared to a Golden Snitch," 12 Oct. 2018 On the map, their homes are tiny specks in a vast sea of blue, rarely in the headlines and far removed from the centers of power. Fox News, "Small islands use big platform to warn of climate change," 27 Sep. 2018 The aluminum and glass body will look great among the blue and white lights adorning the room, and the individual LED candles come with blinking or chasing options, bringing a festive, lively vibe to your Hanukkah digs. Erin Nicole Celletti, Teen Vogue, "9 Holiday Decor Items Under $50," 3 Dec. 2018 The entire room is bathed in an iridescent and peaceful blue light. Elise Taylor, Vogue, "See Diane von Furstenberg’s Seriously Chic London Christmas Tree," 27 Nov. 2018

Recent Examples on the Web: Noun

Its blue fills up the entirety of the high-rise buildings, save for the vertical pattern of the windows. Liz Stinson, Curbed, "Behold, Hokusai’s famous wave print stretching across six buildings," 18 Dec. 2018 The new set also fully exposes Ms. Joplin’s voice at its studio peak and proves that her psychedelic-blues was her own, born out of pain and a Texas youth spent yearning for a way out of town. Marc Myers, WSJ, "‘Sex, Dope & Cheap Thrills’ Review: A Classic Album’s Untold Story," 20 Nov. 2018 Their sashes included pops of blues and greens, matching the colors of mother-of-the-bride Sarah Ferguson and maid-of-honor Princess Beatrice. Harper's Bazaar Staff, Harper's BAZAAR, "Eugenie & Jack's Bridesmaids and Pageboys Wore Less Traditional Looks Than Meghan & Harry's," 12 Oct. 2018 One figure is a wash of blues and pinks, a few hazy lines denoting her waist and thigh. Christina Cacouris, Marie Claire, "This Artist Uses Gold and Glitter to Destigmatize Period Blood," 11 Sep. 2018 Here's a cure for your Monday blues: American, British Airways, Delta, Icelandair, Lufthansa, Swiss, and United are all running cheap flights from at least four U.S. cities on the east coast to Europe right now, according to Scott's Cheap Flights. Bridget Hallinan, Condé Nast Traveler, "Flight Deal: East Coast to Europe from $362 Round-Trip," 16 July 2018 So the brilliant, grumpy and irascible priest of old times is gone, and — with him — goes a priceless oral history of the blues and thousands of songs. George Varga, sandiegouniontribune.com, "Lou Curtiss, a key mentor to Tom Waits, Jack Tempchin and other musicians, has died at 79," 10 July 2018 Muddy Waters balanced both tendencies of the electric blues, conjuring the raw force of Howlin’ Wolf and also possessing the polish and sheen of BB King. John Adamian, courant.com, "Britney Spears, Tory Lanez, Kimya Dawson: Seven Concert Highlights," 7 July 2018 Working his guide magic at Choke Canyon for the last decade, Catfish Marv has developed a special knack of hooking up clients with 25-fish limits of the tasty blues and their channel catfish cousins. Ralph Winingham, San Antonio Express-News, "Hot weather cats: Choke Canyon angling kicks into summer mode," 5 July 2018

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. refinery29.com, "Gigi Hadid Is An 'Illegal Alien' In New Fashion Ad – & People Are Not Happy," 27 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.

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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

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Learn More about blue

Dictionary Entries near blue

blude

bludge

bludgeon

blue

blue acara

blue agave

blue alert

Statistics for blue

Last Updated

14 Jan 2019

Look-up Popularity

Time Traveler for blue

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

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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

the blue : 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

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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

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