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
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

Using a metal spatula, transfer the kolaches to a wire rack and let cool completely. Los Angeles Times, "How to make the best kolaches from our favorite NYC pastry chef," 26 Aug. 2019 Remove from the oven and let cool for one hour before slicing and serving. CBS News, "The Dish: Chef Anya Fernald shares her signature recipes," 24 Aug. 2019 Let cool on the sheets for 5 minutes, then transfer to a wire rack to cool completely. Woman's Day Kitchen, Woman's Day, "Grape Jamwiches," 23 Aug. 2019 Similar to how the human body cools itself by producing sweat that evaporates off your skin, soil moisture limits how quickly the land surface can heat up. Scott K. Johnson, Ars Technica, "Your heatwave could be worse because of a drought somewhere else," 21 Aug. 2019 Remove pan from oven, uncover and let cool completely. Joan Elovitz Kazan, Milwaukee Journal Sentinel, "We challenged local chefs to create 6-ingredient tomato recipes. Here's what they came up with.," 20 Aug. 2019 Manufacturing such an enormous chip carries with it a number of significant challenges, including merely manufacturing and cooling it. Mark Hachman, PCWorld, "Cerebras Systems' new deep-learning chip is as big as your keyboard, and the largest ever," 19 Aug. 2019 Drain barley, spread onto rimmed baking sheet, and let cool completely, about 15 minutes. America’s Test Kitchen, The Denver Post, "Barley makes up the base for this unique, toothy salad," 1 Aug. 2019 Carefully remove the bowl from the microwave and let the tomatoes cool completely in the hot water. Evan Kleiman, latimes.com, "Sun-dried tomatoes, the Mickey Rourke of food, get their second act," 10 July 2019

Recent Examples on the Web: Noun

But penalty-prone Bolles has a problem with losing his cool, and one bad play quickly becomes a bad series of plays. Los Angeles Times, "AFC West preview: Joe Flacco looks to resurrect a proud Broncos franchise," 3 Sep. 2019 To go so long, and to not be in some kind of meme somewhere losing your cool . . Eren Orbey, The New Yorker, "Why John Delaney Won’t Drop Out of the Presidential Race," 11 Aug. 2019 The skies are clear, the sun is out and the temperature is heating up around Portland this weekend before heading into a brief cool-down next week. oregonlive.com, "Portland metro Saturday weather: Warm and dry through the weekend," 20 July 2019 Cities are opening cool-down points and extending recreation center hours to deal with the heat. Emily Bamforth, cleveland.com, "5 ways to take care of your health in extreme heat," 18 July 2019 Amazonian soils also help keep carbon locked up, while trees retain water vapor and create clouds that keep the entire South America region cool. Eric Niiler, WIRED, "Humans, More Than Drought, Are Fueling the Amazon's Flames," 22 Aug. 2019 Before clearing space in your freezer, be sure to let the pie cool completely. Natalie Schumann, Country Living, "Can You Freeze Pumpkin Pie?," 16 Aug. 2019 The 170-piece collection, available online and in select stores today, captures the international cool that made Union a leader in luxury menswear. Ian Malone, Vogue, "Union Los Angeles and Nordstrom Celebrate Their Collaboration With a Lower East Side Block Party," 11 July 2019 Let the cake cool to room temperature before serving. Ben Mims, latimes.com, "Saturday Cooks: Fresh farmers market cherries get a boost in flavor from a surprising source," 29 June 2019

Recent Examples on the Web: Adverb

Let cool slightly, then chop the eggplant into 1-inch pieces. Christopher Kimball, BostonGlobe.com, "Three recipes that bring out the deep flavors of eggplant," 7 Aug. 2019 Look cool in a loose-fitting camp-collar shirt with a bold summer pattern. David Syrek, chicagotribune.com, "Lollapalooza no-stress style guide for guys," 21 July 2019 Let cool; finely crush with the side of a chef’s knife. Andy Baraghani, Bon Appetit, "Spinach-Yogurt Dip with Sizzled Mint," 19 Mar. 2018 Let cool Make Pie Dough Pastry: In food processor, blend flour and salt. Good Housekeeping, "Onion Goat Cheese Tart," 29 July 2015 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

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

Last Updated

17 Sep 2019

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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