cool

adjective
\ˈkül \

Definition of cool 

(Entry 1 of 4)

1 : moderately cold : lacking in warmth The plant grows best in cool climates.

2a : marked by steady dispassionate calmness and self-control a cool and calculating businessperson

b : lacking ardor or friendliness a cool impersonal manner

c of jazz : marked by restrained emotion and the frequent use of counterpoint (see counterpoint entry 1)

d : free from tensions or violence We used to fight, but we're cool now.

3 used as an intensive a cool million dollars

4 : marked by deliberate effrontery or lack of due respect or discretion a cool reply

5 : facilitating or suggesting relief from heat a cool dress

6a of a color : producing an impression of being cool specifically : of a hue in the range violet through blue to green

b of a musical tone : relatively lacking in timbre or resonance (see resonance sense 2a)

7 slang

a : very good : excellent That was a really cool movie. also : all right Is getting together Friday night cool with you?

b : fashionable, hip … not happy with the new shoes … because they were not "cool."— Celestine Sibley

cool

verb
cooled; cooling; cools

Definition of cool (Entry 2 of 4)

intransitive verb

1 : to become cool : lose heat or warmth placed the pie in the window to cool sometimes used with off or down

2 : to lose ardor or passion His anger cooled.

transitive verb

1 : to make cool : impart a feeling of coolness to cooled the room with a fan often used with off or down A swim cooled us off a little.

2a : to moderate the heat, excitement, or force of : calm cooled her growing anger

b : to slow or lessen the growth or activity of usually used with off or down wants to cool off the economy without freezing itNewsweek

cool it

: to calm down : go easy The word went out to the young to cool it.— W. M. Young

cool one's heels

: to wait or be kept waiting for a long time especially from or as if from disdain or discourtesy

cool

noun

Definition of cool (Entry 3 of 4)

1 : a cool time, place, or situation the cool of the evening

2a : absence of excitement or emotional involvement : detachment … must surrender his fine cool and enter the closed crazy world of suicide …— Wilfrid Sheed

b : poise, composure The player lost his cool and began yelling at the referee.

3 : hipness

cool

adverb

Definition of cool (Entry 4 of 4)

: in a casual and nonchalant manner play it cool

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Other Words from cool

Adjective

coolish \ˈkü-​lish \ adjective
coolly or less commonly cooly \ˈkü(l)-​lē \ adverb
coolness \ˈkül-​nəs \ noun

Synonyms & Antonyms for cool

Synonyms: Adjective

A-OK, A1, awesome, bang-up, banner, beautiful, blue-chip, blue-ribbon, boffo, bonny (also bonnie) [chiefly British], boss [slang], brag, brave, bully, bumper, capital, choice, classic, corking, crackerjack, cracking, dandy, divine, dope [slang], down [slang], dynamite, excellent, fab, fabulous, famous, fantabulous [slang], fantastic, fine, first-class, first-rate, first-string, five-star, four-star, frontline, gangbusters (also gangbuster), gilt-edged (or gilt-edge), gone [slang], grand, great, groovy, heavenly, high-class, hot, hype [slang], immense, jim-dandy, keen, lovely, marvelous (or marvellous), mean, neat, nifty, noble, number one (also No. 1), numero uno, out-of-sight [slang], par excellence, peachy, peachy keen, phat [slang], prime, primo [slang], prize, prizewinning, quality, radical [slang], righteous [slang], sensational, slick, splendid, stellar, sterling, superb, superior, superlative, supernal, swell, terrific, tip-top, top, top-notch, top-of-the-line, top-shelf, topflight, topping [chiefly British], unsurpassed, wizard [chiefly British], wonderful

Synonyms: Verb

calm (down), chill out [slang], hush, pipe down, quiet, settle (down)

Synonyms: Noun

aplomb, calmness, collectedness, composedness, composure, coolness, countenance, equanimity, equilibrium, imperturbability, placidity, repose, sangfroid, self-composedness, self-possession, serenity, tranquillity (or tranquility), tranquilness

Antonyms: Adjective

atrocious, awful, execrable, lousy, pathetic, poor, rotten, terrible, vile, wretched

Antonyms: Verb

act up, carry on, cut up

Antonyms: Noun

agitation, discomposure, perturbation

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Choose the Right Synonym for cool

Adjective

cool, composed, collected, unruffled, imperturbable, nonchalant mean free from agitation or excitement. cool may imply calmness, deliberateness, or dispassionateness. kept a cool head composed implies freedom from agitation as a result of self-discipline or a sedate disposition. the composed pianist gave a flawless concert collected implies a concentration of mind that eliminates distractions especially in moments of crisis. the nurse stayed calm and collected unruffled suggests apparent serenity and poise in the face of setbacks or in the midst of excitement. harried but unruffled imperturbable implies coolness or assurance even under severe provocation. the speaker remained imperturbable despite the heckling nonchalant stresses an easy coolness of manner or casualness that suggests indifference or unconcern. a nonchalant driver

Examples of cool in a Sentence

Adjective

The weather is cool today. The surface is cool to the touch. The plant grows best in cool climates. I'm feeling a little cool. We changed into some cooler clothes. She remained calm, cool, and collected.

Verb

The fan cools the engine. the cooling effect of the breeze Allow the cake to cool before slicing. the cooling of the ocean waters I took a break from the discussion to allow my anger to cool. His interest in her has cooled somewhat.

Noun

the judge's customary cool stood him in good stead during the sensational trial I envy you your cool.

Adverb

Here comes Mom. Act cool and she won't suspect a thing.
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Recent Examples on the Web: Verb

But demand cooled in recent years as consumers, particularly younger shoppers, sought a more individualistic look. Suzanne Kapner, WSJ, "Michael Kors Fumbles Renewed Demand for Logo Handbags," 7 Nov. 2018 For example, while greenhouse warming generally causes an increase in global precipitation, cooling the planet in this way would cause an even stronger precipitation decrease that more than cancels that out. Scott K. Johnson, Ars Technica, "Geoengineering could stop warming but comes with side of sea-level rise," 31 Oct. 2018 Bella Thorne's latest hair and makeup look was, well, cool in more ways than one. Zoë Weiner, Teen Vogue, "Bella Thorne Wore Blue Lipstick on Instagram," 29 Oct. 2018 The index was boosted by monthly increases in business activity and new orders, both of which had cooled in July. Fox News, "US services firms saw growth quicken in August," 6 Sep. 2018 As underclocked variants of mobile graphics cards (read: weaker), Max Q graphics can run and be cooled reliably in a thinner chassis. Stefan Etienne, The Verge, "The best gaming laptops you can buy right now," 13 July 2018 Remove the cakes from the oven and allow to cool in the pan for 5 minutes. Nik Sharma, SFChronicle.com, "A Brown Kitchen: Mango layer cake for a fresh summer treat," 11 July 2018 Not much will change until the temperature begins to cool in a couple months. Tyler Mahoney Special To The Star, kansascity, "Fishing report: Catfish action picking up in Kansas, Missouri lakes," 11 July 2018 Chicago had to be hoping that concerns over LaVine’s injury and his unfinished game would cool the market for him in a tight cap environment. Ben Golliver, SI.com, "Grades: Bulls Matching Zach LaVine's Kings Offer Sheet Bitter Pill to Swallow," 7 July 2018

Recent Examples on the Web: Noun

Ana Lily Amirpour’s stylish black-and-white Farsi-language vampire film feels like a lost 1980s Jim Jarmusch project, thanks to its languid, sleepy 1950s vibe and unending sense of bored, disaffected cool. Tasha Robinson, The Verge, "The new horror film canon (and where to stream it)," 1 Nov. 2018 Let cool in the pan 10 minutes, then invert, discard parchment, and let cool completely on a wire rack. Woman's Day Test Kitchen, Woman's Day, "Thanksgiving Cake," 24 Oct. 2018 Let cool and remove excess grease with a paper towel. Lauren Smith, Good Housekeeping, "How to Clean Cast Iron the Right Way," 27 Aug. 2018 Let the relish cool to room temperature and then serve or store in a lidded container in the refrigerator. San Antonio Express-News, "Recipe: Spicy Corn Relish," 11 July 2018 Let cool at least 15 minutes before serving with vanilla ice cream. Ellise Pierce, star-telegram, "It's time to start cooking with summer’s tasty top prize — Texas peaches," 10 July 2018 Everything that made the character — and vampires in general — cool began with Lugosi. Brian Truitt, USA TODAY, "'Hotel Transylvania 3': Ranking the best movie Draculas, from Bela Lugosi to Adam Sandler," 9 July 2018 The sheer insanity of the situations that befall Cassius forces him to respond with wit, energy and reckless audacity, but the captivating stillness and melancholy cool that are among Stanfield’s defining traits as an actor never recede. Justin Chang, latimes.com, "Review: Boots Riley's 'Sorry to Bother You' is an arrestingly surreal satire on class rage and cultural identity," 5 July 2018 In a small bowl, combine the gelatin and hot water and stir until fully dissolved; let cool. Susan Selasky, charlotteobserver, "Celebrate the Fourth with minimal fuss, maximum flavor," 3 July 2018

Recent Examples on the Web: Adverb

Let cool slightly before serving, or cool completely before storing. Charlotte Druckman, sacbee, "In a churn of events, salted butter is back | The Sacramento Bee," 8 May 2018 Let cool a few minutes, then take egg cups out of muffin pan to cool on a rack. Anna Thomas Bates, Milwaukee Journal Sentinel, "Egg cups make an easy grab-and-go lunch," 21 Feb. 2018 Drain well and let cool before peeling and cutting the eggs in half lengthwise, reserving the yolks. Alysha Witwicki, Milwaukee Journal Sentinel, "What to bring? These side dishes are always welcome at a summer picnic," 29 June 2018 Transfer to a wire rack and let cool before slicing. Steven Satterfield, Country Living, "Buttermilk Cornbread," 1 Feb. 2011 Let cool slightly, then transfer oil and spice mixture to a bowl. Jonah Miller, WSJ, "Throw a Summer Party the Effortless Spanish Way," 6 July 2018 Let cool completely, cover with plastic or store airtight, and store at room temperature. Claire Saffitz, Bon Appetit, "The 10 Baking Questions People Ask Me Literally All the Time, Answered," 21 May 2018 Let cool completely before storing in the refrigerator for up to 3 weeks. Chris Ross, sandiegouniontribune.com, "New book is collection of low-alcohol drinks," 4 June 2018 New grass needs to be well established before temperatures start to turn cool in late September. Neil Sperry, star-telegram, "Here’s your gardening to-do list for the second part of the summer," 11 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cool.' 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 cool

Adjective

before the 12th century, in the meaning defined at sense 1

Verb

before the 12th century, in the meaning defined at intransitive sense 1

Noun

15th century, in the meaning defined at sense 1

Adverb

1968, in the meaning defined above

History and Etymology for cool

Adjective

Middle English col, going back to Old English cōl, going back to West Germanic *kōlu- (whence also Middle Dutch coele "moderately cold" and, from a variant *kōlja-, Old High German kuoli), lengthened-grade derivative from the base of *kalan- "to be cold" — more at cold entry 1

Verb

Middle English colen, going back to Old English cōlian, verbal derivative from Germanic *kōl- cool entry 1 (whence also Old Saxon colon "to become cool," Old High German kuolēn)

Noun

Middle English cole, derivative of col cool entry 1

Adverb

derivative of cool entry 1

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Learn More about cool

Dictionary Entries near cool

cook up

cookware

cook wrasse

cool

coolabah

coolamon

coolant

Statistics for cool

Look-up Popularity

Time Traveler for cool

The first known use of cool was before the 12th century

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More Definitions for cool

cool

adjective

English Language Learners Definition of cool

 (Entry 1 of 3)

: somewhat cold : not warm or hot

: made of a light, thin material that helps you stay cool

: able to think and act in a calm way : not affected by strong feelings

cool

verb

English Language Learners Definition of cool (Entry 2 of 3)

: to make (someone or something) cool

: to become cool : to lose heat or warmth

: to become less strong or intense especially in emotion

cool

adverb

English Language Learners Definition of cool (Entry 3 of 3)

: in a calm manner : in a way that does not seem unusual or excited

cool

adjective
\ˈkül \
cooler; coolest

Kids Definition of cool

 (Entry 1 of 3)

1 : somewhat cold : not warm a cool day a cool room

2 : not letting or keeping in heat cool clothes

3 : calm entry 3 sense 2 She is cool in a crisis.

4 : not interested or friendly: He was cool to my idea.

5 : fashionable, stylish, or attractive in a way that is widely approved of

6 : very good excellent

Other Words from cool

coolly adverb
coolness noun

cool

verb
cooled; cooling

Kids Definition of cool (Entry 2 of 3)

: to make or become less warm

cool

noun

Kids Definition of cool (Entry 3 of 3)

1 : a time or place that is not warm the cool of the evening

2 : a calm state of mind Keep your cool.

Legal Definition of cool 

: to lose passion : become calm sometimes used with off or down the time elapsing…is such that a reasonable man thus provoked would have cooled— W. R. LaFave and A. W. Scott, Jr.

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More from Merriam-Webster on cool

Rhyming Dictionary: Words that rhyme with cool

Thesaurus: All synonyms and antonyms for cool

Spanish Central: Translation of cool

Nglish: Translation of cool for Spanish Speakers

Britannica English: Translation of cool for Arabic Speakers

Comments on cool

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