cool

adjective
\ ˈkül How to pronounce cool (audio) \

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 informal

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

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

Across the region, PG&E offers a list of cooling centers on its website. Melia Russell, SFChronicle.com, "Air conditioners, a Bay Area rarity, are selling out," 11 June 2019 Bianca in Live Oak, Tex., sent a picture of Shiner cooling off in the kiddie pool after running around the backyard. Washington Post, "Hints From Heloise: Shelter donations," 8 June 2019 VIA Metropolitan Transit will provide free rides to people needing transportation to cooling centers. Fares Sabawi, ExpressNews.com, "‘Fierce and quick’ storm uproots trees, downs power lines," 7 June 2019 Employers tapped the brakes on hiring in May, signaling companies are taking a more cautious approach at a time of cooling global growth and trade tensions and underscoring a spring slowdown in the decadelong U.S. economic expansion. Eric Morath, WSJ, "U.S. Added 75,000 Jobs in May as Hiring Slowed," 7 June 2019 Approximately 14 miles west of town is Grand Lake St. Marys State Park, Ohio's largest inland lake and the perfect spot for cooling off during summer months. Laura Kiniry, Smithsonian, "The 15 Best Small Towns to Visit in 2019," 6 June 2019 Restrooms, phone charging stations, concessions and televisions and fans for cooling off will be part of this area. Michael Casagrande | Mcasagrande@al.com, al.com, "Bryant-Denny Stadium capacity to drop only slightly after renovation," 6 June 2019 Nuclear power plants, many of which are located on or near coasts because of the proximity to water for cooling, also face rising sea levels and the risk of more extreme storms due to climate change. National Geographic, "What is nuclear energy and is it a viable resource?," 26 Mar. 2019 With a cooling spring breeze wafting through the shutters of the Gramercy Park Hotel’s penthouse terrace, thirty chic women congregated for a lovely luncheon. Zachary Weiss, Vogue, "Kassatex Launches Lovely Linens With a Mother’s Day Luncheon," 9 May 2019

Recent Examples on the Web: Noun

Transfer to a medium bowl and cool to room temperature. Christopher Kimball, BostonGlobe.com, "Recipes: A hearty Father’s Day menu, starring steak," 12 June 2019 EXPRESS FORECAST Today: Cloudy and cool with scattered showers likely. Brian Jackson, Washington Post, "D.C.-area forecast: Cooler today as scattered showers threaten through tomorrow; warmer and drier midweek," 9 June 2019 When combined with his prodigious storehouse of knowledge and his unerring buzzer timing, Holzhauer’s gambler’s cool allowed him to rack up massive totals within minutes, leaving his opponents in the dust. San Diego Union-Tribune, "Column: Why James Holzhauer’s long ‘Jeopardy!’ winning streak lost me," 6 June 2019 Let cool in the pan; then, using overhangs, transfer to a cutting board and cut into pieces. Woman's Day Kitchen, Woman's Day, "Blueberry-Oatmeal Blondies," 20 May 2019 Then, microwave it for 6 to 7 minutes, let cool, and dig in. 10. Audrey Bruno, SELF, "12 Microwave Hacks That Will Change Your Cooking Game," 9 May 2019 Let cool for at least 15 minutes, then toss with another 1/3 cup maple syrup before serving. Ashley Rodriguez, Woman's Day, "A Make-Ahead Waffle Recipe That's Perfect for Mother's Day," 10 Apr. 2019 Transfer ramekins to a wire rack; let cool for 30 minutes, then refrigerate until chilled, at least 1 hour or up to overnight. Kate Merker, Country Living, "Earl Gray Crème Brûlée," 19 Mar. 2019 Sarah Staudinger is banking on her uncanny ability to create cool, collectible accessories with a new line of footwear, launching today. Kerry Pieri, Harper's BAZAAR, "Staud Launches Shoes and We're in Love," 27 Feb. 2019

Recent Examples on the Web: Adverb

Let cool slightly before lifting out the slab and transferring to a wire rack (discard the foil once cooled). Becky Krystal, The Denver Post, "The key to these gooey, chocolaty blondies? Open sesame.," 3 June 2019 Set saucepan in a bowl of ice water and let cool, stirring occasionally. Claire Saffitz, Bon Appetit, "Coconut Chia-Tapioca Pudding," 19 Mar. 2018 Let cool completely in pan before cutting into pieces. Woman's Day Kitchen, Woman's Day, "Derby Pie Brownies," 29 Apr. 2019 Let cool completely in refrigerator, at least 20 minutes. Kathleen Squires, WSJ, "Feed Your Head: Foods That Target Depression and Anxiety," 26 July 2018 Place the pot over a large bowl filled with ice water and let cool, stirring occasionally, until chilled, 20 to 30 minutes. Kate Merker And Taylor Murray, Country Living, "Gingerbread Eggnog," 11 Dec. 2018 Let cool slightly to thicken, then transfer to a resealable bag and cut off one corner to make a small hole. Woman's Day Kitchen, Woman's Day, "Eggnog Mousse Snowmen," 29 Nov. 2018 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

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)

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

cool

adjective
\ ˈkül How to pronounce cool (audio) \
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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