Definition of cool in English:

cool

Line breaks: cool
Pronunciation: /kuːl
 
/

adjective

1Of or at a fairly low temperature: it’ll be a cool afternoon the wind kept them cool
More example sentences
  • If grain is stored into the following summer, run fans only at night when the temperature is fairly cool.
  • It was late afternoon, and fairly cool, but the USAID official was sweating heavily.
  • We have been getting good afternoon showers with fairly cool nights, a welcome change from the heat.
Synonyms
chilly, cold; fresh, crisp, refreshing, invigorating, bracing, brisk; unheated, draughty
informal nippy
British informal parky
literary chill
1.1Soothing or refreshing because of its low temperature: a long, cool glass of orange juice
More example sentences
  • We then went for a stroll through the village, and had a cool, refreshing drink in a bar, before going back to collect our bags for the night.
  • The ocean air was refreshing and a cool breeze had tempered the thick Hawaiian heat.
  • He said putting the top of the can on his lips, enjoying the cool refreshing drink.
1.2(Especially of clothing) keeping one from becoming too hot: a cool cotton dress
More example sentences
  • Light, comfortable, and cool clothing is a must for carnival in Jamaica.
  • I remembered that my father wore velvet coats in the winter and cool shirts in the summer.
  • The enemy were strong, and could easily fight in the sun in their surprisingly cool robes.
1.3(Of a colour) containing pale blue, green, or grey tones: the bathroom was all glass and cool, muted blues
More example sentences
  • To lift a ceiling, select a pale tint of a cool hue such as green or blue.
  • Typical of country cottage gardens, cool colours such as pale blue, soft pink and mauve provide clouds of colour that are restful and tranquil.
  • Ahead of us the greys, cool greens and off whites of the Corsican mountains spread out toward the horizon.
2Showing no friendliness towards a person or enthusiasm for an idea or project: he gave a cool reception to the suggestion for a research centre
More example sentences
  • However, the idea has received a cool reception from employers, who believe it is unrealistic for all but a very few companies and employees.
  • Most environmental non-governmental organisations have been cool to the idea of funding rehabilitation projects.
  • Throughout his life Louis treated her with a cool reserve.
Synonyms
2.1Free from excitement, anxiety, or excessive emotion: he prided himself on keeping a cool head she seems cool, calm, and collected
More example sentences
  • The Swede is known for keeping a cool head but said this was his nature, although bosses owe it to their teams to be confident and positive.
  • Despite these additional pressures, the bride-to-be is keeping a cool head.
  • Now ambulance staff have praised the Wigginton youngster for keeping a cool head and raising the alarm.
Synonyms
2.2(Of jazz) restrained and relaxed.
More example sentences
  • His book does not deal with the offshoots of bebop, such as cool jazz, hard bop, modal jazz, free jazz and fusion.
  • Throw in waltzes, cool jazz, quasi-hymns, slinky beats and some country, and this might be the man's most musically diverse album.
  • The gazebo of the amphitheatre was the perfect setting for their ethereal fusion of cool jazz and old-time calypso.
3 informal Fashionably attractive or impressive: youngsters are turning to smoking because they think it makes them appear cool
More example sentences
  • Who is going to replace her as the model of cool, trendy fashion on TV?
  • I've never been near here before, but the lights of Sydney look so cool at night.
  • Her style is different from anyone else I know, which made her totally cool in my book.
Synonyms
fashionable, stylish, chic, up to the minute; sophisticated, cosmopolitan, elegant; Frenchle dernier cri
North American informal kicky, tony, fly, stylin'
black English down
3.1Excellent: [as exclamation]: our office was a sunny room with a computer you didn’t even have to plug in. Cool!
More example sentences
  • Tomorrow I also get to see my nephew again for the first time in a month and a half - cool!
  • I didn't know all planets and planetoids were officially supposed to be named after gods of mythology - cool!
  • They are however looking for other indie kids who are unique in exactly the same way as them - cool, huh?
3.2Used to express acceptance of or agreement with something: if people want to freak out at our clubs, that’s cool I told Bill that I was going to write the final draft of the script and he was cool with that
More example sentences
  • No, it's cool; I don't mind talking about that.
  • I work hard at things to improve, but I also realize it takes time and I'm cool with that.
  • If that's not your thing, that's cool by me, but know that it's encouraged and applauded in this community.
4 (a cool ——) informal Used to emphasize the size of an amount of money: research for a new drug can cost a cool £50 million
More example sentences
  • Belfast’s bid to become the European Capital of Culture in 2008 could cost a cool £150 million
  • A two-piece suit from this guy comes in at a cool two grand, so is unlikely to be realistic unless I win the lottery.
  • It’s got a top speed of 185 and would cost you a cool £110,000 to drive off the forecourt.

noun

[mass noun] Back to top  
1 (the cool) A fairly low temperature: the cool of the night air
More example sentences
  • She sat well back from the fire; the night cool had not set in yet.
  • Emma was shocked at the electricity that had passed between them, an instant heat despite the cool of the June night.
  • It was night now, I could feel the cool of night in the air, and smell it in the breeze.
Synonyms
1.1A time or place at which the temperature is pleasantly low: the cool of the day
More example sentences
  • As they sit at the openings of their tents in the cool of the summer evening, on the completion of a long journey, they break out into song.
  • What better way to end a hot summer's day than to sit back to enjoy the cool of the evening with the latest gripping novel.
  • Sometimes a few small boys are scrabbling about on a road or an old lady is sitting out in the cool of an evening.
2Calmness; composure: he recovered his cool and then started laughing at us
More example sentences
  • His point guard play is a picture of composure and cool.
  • Hopefully, he'll recover his stony-faced cool in time to thwart the intergalactic threat.
  • For all her cool and calmness, she liked insulting my older brother.
3The quality of being fashionably attractive or impressive: all the cool of high fashion
More example sentences
  • Now Giorgio Armani, one of the world's most influential fashion designers, is bringing his unique brand of Italian cool to Edinburgh.
  • Casual fashion from the 70s and 80s is the latest street cool, apparently.
  • Topshop was one of the pioneers of turning catwalk cool into high street hip, and it has been hailed as Fashion Retailer Of The Year, not once but twice.

verb

Back to top  
1Become or make less hot: [no object]: we dived into the river to cool off [with object]: cool the pastry for five minutes
More example sentences
  • While humans try to cool off under the fan and the more fortunate in air-conditioned rooms, the wild and domestic animals are not so lucky.
  • The weekend's fine weather was good news for Yorkshire's tourist industry and, of course, the baking heat sent many in search of ways to cool off.
  • It started to cool off today, at last, much to Dolly's relief.
Synonyms
chill, refrigerate, make cold/colderget cold/colder, cool down, lose heat
1.1Become or make calm or less excited: [no object]: after I’d cooled off, I realized I was being irrational [with object]: George was trying to cool him down
More example sentences
  • We literally had to pin him down until he cooled off.
  • He would allow her to come back to him after she cooled off, and he would say nothing of it.
  • By time he had gotten his food and sat down at a table in the corner, he had cooled off a bit.
Synonyms
calm down, recover/regain one's self-control, recover/regain one's composure, compose oneself, control oneself, pull oneself together, simmer down
1.2 [no object] (cool out) chiefly West Indian Relax: a dreamy spot full of sunshine and sea where you could cool out and detox
More example sentences
  • We were cooling out, sipping fermented sugar cane and chillin’ when, out of the blue a friend of his from England passed through the place.
  • He was merely cooling out waiting to play a match later that afternoon.
  • When I get home this evening, I will get back to more mundane things, like just cooling out, or maybe I should go for a walk if I get home early enough as I haven't done that in a while.

Origin

Old English cōl (noun), cōlian (verb), of Germanic origin; related to Dutch koel, also to cold.

Phrases

cool it!

informal Behave in a less excitable manner: cool it and tell me why you’re so ecstatic
More example sentences
  • I got a certificate saying I've been admitted to the bar, and I've even got a wig, so cool it!
  • If you're not careful you'll be too tired to even lift the crown, cool it!
  • I ask him to cool it, but he doesn't calm down that easily, so I think it's about something else.

cool one's heels

see heel1.
More example sentences
  • Well, drivers will have to cool their heels in traffic.
  • The reporters who stay cool their heels in the lobby.
  • There we all were, cooling our heels in a hotel lobby waiting for our first appointments of the day.

keep (or lose) one's cool

informal Maintain (or fail to maintain) a calm and controlled attitude: he finally lost his cool with a photographer and threatened to hit him
More example sentences
  • Despite the fact that he was vastly outnumbered John never lost his cool, stayed calm and came away with a deserved victory.
  • He's trying to get control by making me lose my cool.
  • He has kept remarkably calm, refusing to lose his cool in the face of constant provocation.

too cool for school

informal
Very cool or fashionable: he has no brains, no looks, no personality, but he still thinks he’s too cool for school
More example sentences
  • She is such a smart ass, a know-it-all, very too cool for school.
  • The assistants look like they're too cool for school.
  • We weren't trying to be too cool for school.

Derivatives

cooled

adjective
[in combination]: a water-cooled engine

coolish

adjective
More example sentences
  • We were ushered through to the comfortable bar area - again, decorated in coolish summer colours - where we pondered the menu over a glass of Kaliber low alcohol lager for me and an orange juice for Lili.
  • ‘The last week to 10 days have warmed up and I think the overall temperature for July will probably be average after a coolish start,’ he said.
  • ‘It was coolish,’ says Murray, by which he means an ambient temperature of minus 42 degrees Celsius.

coolly

Pronunciation: /ˈkuːlli/
adverb
More example sentences
  • For the past few weeks it's been difficult to remain coolly detached from the lunacy gripping this city.
  • He coolly dispatched it to the back of the net and finally the scoreboard reflected the true nature of the contest.
  • He initially reacted coolly to setting up such a body, then decided during the weekend to go forward.

coolness

noun
More example sentences
  • It is a time of expectant hush, a hint of coolness and freshness in the air, the promise of a new day yet to come.
  • Both were thrown in the water but the author, showing a commendable coolness, managed to grab the boy and scramble on to a nearby rock.
  • Was it truly necessary for him to question the coolness of the audience?

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