Definition of cool in English:



  • 1Of or at a fairly low temperature.

    ‘it'll be a cool afternoon’
    ‘the wind kept them cool’
    • ‘I smiled and climbed the ladder into the hay loft, shivering in the refreshingly cool air.’
    • ‘Leave until cool enough to handle, then peel them and cut into wedges.’
    • ‘We have been getting good afternoon showers with fairly cool nights, a welcome change from the heat.’
    • ‘Keep the water cool because the body absorbs water at a cool temperature quicker than if very cold or hot.’
    • ‘By cool room temperature I mean an unheated castle in the English countryside in December.’
    • ‘Bring in pots of fuchsia and pelargoniums and keep them in a light, cool frost - free place.’
    • ‘Debbie's having air con installed today at work so it should be a bit better over there, I'll just have to direct my fan on to the air con unit to keep it cool!’
    • ‘It was the last day of October, a chilly afternoon with cool winds blowing in from the ocean.’
    • ‘Her hands felt cool against his burning skin as she lifted his arm.’
    • ‘It was a beautiful fall day, the kind where the temperature is cool but not too chilly, so you can get away with wearing your jacket open.’
    • ‘If grain is stored into the following summer, run fans only at night when the temperature is fairly cool.’
    • ‘Convection is the dissipation of heat when relatively cool air passes over exposed skin.’
    • ‘The weather was cool enough to wear pants, but not yet cold enough for a jacket.’
    • ‘Unseasonably cool weather also contributed to track records in four competition categories.’
    • ‘By the 27th, a strong cold front would be bringing strong winds and very cool temperatures.’
    • ‘When buying seeds look at where and how the seed is stored - cool, dry positions are best.’
    • ‘It was late afternoon, and fairly cool, but the USAID official was sweating heavily.’
    • ‘The North Sea's cool surface temperature keeps eastern areas colder than those further west.’
    • ‘However, up in the mountainous region like this also brought cold wind and cool temperature.’
    • ‘The air was cool against their skin, contrasting with the heat inside the passageway.’
    chilly, cold
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    1. 1.1Soothing or refreshing because of its low temperature.
      ‘a cool drink in the leafy shade’
      figurative ‘the bathroom was all glass and cool, muted blues’
      • ‘I closed my eyes again and imagined myself in a cool, refreshing blue pool.’
      • ‘And that would be more refreshing than a cool, crisp cola on a hot summer's day.’
      • ‘After the initial shock of the cold, she found the water rather cool and refreshing.’
      • ‘It was cool enough to be refreshing but not so cold that you froze.’
      • ‘He splashed the water on his face and found it refreshingly cool, he dipped his head under and felt the chill run through his body.’
      • ‘He said putting the top of the can on his lips, enjoying the cool refreshing drink.’
      • ‘A pleasantly cool breeze was drifting in though the half-open window behind Maui.’
      • ‘Jabu bathed his feet in the cool refreshing river as the cows drank their fill.’
      • ‘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.’
      • ‘At such times, the tongue and the throat crave for nothing more than a long drink of fresh, cool water.’
      • ‘He then took off his glasses and started to bring the cool refreshing water up to his face.’
      • ‘I knew it was an oasis of cold drinks, cool grasses and music in the park.’
      • ‘The beer had been refreshingly good, like a cool breeze in a glass, and I had another.’
      • ‘She was drinking the cool, crisp water before the beginning of the journey.’
      • ‘Glasses of blissfully cool water were brought forth and each gulped the refreshment down like a castaway.’
      • ‘Brian filled the glass with nice, cool, fresh beer.’
      • ‘The cool refreshing water moistened his throat and gave him chills down his back.’
      • ‘The ocean air was refreshing and a cool breeze had tempered the thick Hawaiian heat.’
      • ‘The cool and refreshing water caressed his lips, he drank but as he swallowed, his throat sent searing pain to his brain.’
      • ‘It's as if your body is charged with new energy when you bend down on hands and knees, cup your hands and drink the cool, fresh liquid.’
      chilly, cold
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    2. 1.2(especially of clothing) keeping one from becoming too hot.
      ‘wear your cool, comfortable shirts’
      • ‘I remembered that my father wore velvet coats in the winter and cool shirts in the summer.’
      • ‘Light, comfortable, and cool clothing is a must for carnival in Jamaica.’
      • ‘Cool, cotton clothes are a must in the heat and humidity, but cover up to visit palaces and temples.’
      • ‘Caroline was wearing a cool summer dress.’
      • ‘The enemy were strong, and could easily fight in the sun in their surprisingly cool robes.’
  • 2Showing no friendliness toward a person or enthusiasm for an idea or project.

    ‘he gave a cool reception to the suggestion for a research center’
    • ‘Throughout his life Louis treated her with a cool reserve.’
    • ‘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.’
    • ‘The government s plan to provide corporations with tax incentives to employ new workers over the next three years, starting from this year, has been generally greeted with a cool response.’
    • ‘His relationship with his wife has broken down and his two sons are distant and cool with him.’
    unenthusiastic, lukewarm, tepid, indifferent, apathetic, half-hearted, negative
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    1. 2.1Free from excitement or anxiety.
      ‘he prided himself on keeping a cool head’
      ‘she seems cool, calm, and collected’
      • ‘I wanted to be cool, calm and collected; at least in front of my audience.’
      • ‘He is cool and controlled.’
      • ‘His goal was reward for keeping a cool head and desperately trying to be in the right place at the right time.’
      • ‘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.’
      • ‘Britain's first mainstream female football presenter is cool, poised and confident.’
      • ‘As an actor, Richardson conveys just the right kind of austere intelligence where cool logic triumphs over emotion every time.’
      • ‘As difficult as it is to go against your instincts and emotions, you must control them and keep a cool head.’
      • ‘He was calm, cool and collected, working fast without emotion, just like the others.’
      • ‘His voice was so calm, so cool and collected, I almost felt close to swooning.’
      • ‘Although he sensed a stew of emotions bubbling beneath her cool exterior, she never gave a sign of them in her eyes.’
      • ‘King can make plays with his feet, which Gruden loves, and he's very cool under pressure.’
      • ‘Now ambulance staff have praised the Wigginton youngster for keeping a cool head and raising the alarm.’
      • ‘His voice cracks with emotion as he tries to retain his cool composure.’
      • ‘He's so cool, calm and collected that he keeps me in check.’
      • ‘The World Cup will test Logan's nerve, show if she can stay cool under pressure.’
      • ‘It's not often, especially in recent times, that his team have looked so cool and unruffled.’
      • ‘The one Sunderland player who remained cool under this pressure was Thomas Sorenson.’
      • ‘I try to be cool, calm and collective even in some severely testing situations.’
      • ‘It is legislation that has been driven by reaction and by emotion rather than cool thought.’
      calm, cool, calm, and collected, composed, as cool as a cucumber, collected, cool-headed, level-headed, self-possessed, controlled, self-controlled, poised
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    2. 2.2(of jazz, especially modern jazz) restrained and relaxed.
      • ‘Throw in waltzes, cool jazz, quasi-hymns, slinky beats and some country, and this might be the man's most musically diverse album.’
      • ‘Even today, more than 40 years since it was first cut, it's still one of the most iconic tracks to come out of jazz's cool school.’
      • ‘When the band plays, the jazz is cool, the atmosphere is laid-back and the bar service is quiet but efficient.’
      • ‘The gazebo of the amphitheatre was the perfect setting for their ethereal fusion of cool jazz and old-time calypso.’
      • ‘His book does not deal with the offshoots of bebop, such as cool jazz, hard bop, modal jazz, free jazz and fusion.’
  • 3informal Fashionably attractive or impressive.

    ‘I always wore sunglasses to look cool’
    • ‘Across the road is the Turbine Hall, also a cool music venue.’
    • ‘On Waltz Across America, the band comes together for a very cool live collection of some of their biggest and best songs.’
    • ‘It is a very cool collection of photographs from around New York.’
    • ‘I've never been near here before, but the lights of Sydney look so cool at night.’
    • ‘You could get a lot of cool free stuff from the manufacturers.’
    • ‘It's still cool that we get free memberships and extra bandwidth and whatnot.’
    • ‘Certainly, as a corrective to some of the more po-faced excesses of cool London club culture, rave was a blast of fresh air, an important rupture.’
    • ‘One of the coolest bands of the 1970s has survived to still make cool music.’
    • ‘You will win a really cool prize. A prize so cool, I can't even tell you what it is at risk of upsetting contestants who don't win.’
    • ‘The music is cool, with decent people depending on the night and great bartenders.’
    • ‘Her style is different from anyone else I know, which made her totally cool in my book.’
    • ‘Be happy that you found someone cool to hang out with.’
    • ‘I eventually went insane but I sure collected a lot of free cool stuff.’
    • ‘I want to devote my thirties to having babies, minding them and being free from the constant pursuit of cool clothes.’
    • ‘Who is going to replace her as the model of cool, trendy fashion on TV?’
    • ‘It was a hot basement but a cool crowd, free wine, very nice shop, and really good discussion afterwards.’
    • ‘They had great food, there was always a good environment, and they played cool music in the background.’
    • ‘There's just something so cool about a band doing a free in-store performance.’
    • ‘Still there was an end aim, a cool bar and cool free food and cool company.’
    • ‘It's an unpretentious medley of old and new - the perfect antidote to the self-consciously cool bars of Dublin.’
    fashionable, stylish, chic, up to the minute
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    1. 3.1Excellent.
      [as exclamation] ‘a computer you didn't even have to plug in. Cool!’
      • ‘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?’
      very good, superb, outstanding, magnificent, of high quality, of the highest quality, of the highest standard, exceptional, marvellous, wonderful, sublime, perfect, eminent, pre-eminent, matchless, peerless, supreme, first-rate, first-class, superior, superlative, splendid, admirable, worthy, sterling, fine
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    2. 3.2Used to express acceptance or agreement.
      ‘if people want to freak out at our clubs, that's cool’
  • 4informal Used to emphasize a specified quantity or amount, especially of money.

    ‘a cool $15,000 to buy the franchise’
    • ‘It’s got a top speed of 185 and would cost you a cool £110,000 to drive off the forecourt.’
    • ‘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.’


  • 1A fairly low temperature.

    ‘the cool of the night air’
    • ‘She sat well back from the fire; the night cool had not set in yet.’
    • ‘There, we fished the ocean from the beaches, waiting until the sunbathers had cooked themselves enough first and the evening cool arrived.’
    • ‘Emma was shocked at the electricity that had passed between them, an instant heat despite the cool of the June night.’
    • ‘Again, Saoirse shivered pleasantly, enjoying the cool of his hands against her warm, humming skin.’
    • ‘All was forgotten in the evening cool of the Greek capital for a few hours at least.’
    • ‘It was night now, I could feel the cool of night in the air, and smell it in the breeze.’
    • ‘Pushing back the sheets, Loraine lay on her back, staring about at the shadowed room in the pale cool of night.’
    • ‘In the summer he is sheltered from heat and flies during the day while turning out at evening to enjoy the cool.’
    chill, chilliness, coldness
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    1. 1.1A time or place at which the temperature is pleasantly low.
      ‘the cool of the evening’
      • ‘It's best then to fish in the cool of the dawn or even at night when they are actively on the rampage.’
      • ‘In the cool of the evening as the day winds down, they gather again for a cold beer or a Pernod.’
      • ‘In the cool of the evening I made my way back to the Ramblas, and took up station among the buzzing crowds for the Giants' Parade.’
      • ‘I wandered round the town yesterday evening, and it seemed as if everybody was out and about enjoying the relative cool of the evening.’
      • ‘She went outside to mooch around the garden in the cool of the night.’
      • ‘With a bit of effort you rise from you seat and wander out into the cool of the night.’
      • ‘Sometimes a few small boys are scrabbling about on a road or an old lady is sitting out in the cool of an evening.’
      • ‘There were plenty of choices and in the cool of the evening it was inviting to just sit there and enjoy.’
      • ‘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.’
      • ‘Shivering in the cool of the night, she wrapped her arms around her, running her hands along the goosebumps on her arms.’
      • ‘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.’
      • ‘He did not read it, nor even glance at it, but put it straight into the fire the slaves had so painstakingly built up against the cool of the evening.’
      • ‘Autumn hits hard here and the windows are blurred in the cool of the night but over the mountains there is blue sky and promise of a warm day to burn away the mist.’
      • ‘Now that the sun has set and the cool of the evening has come, some of the warmth we absorbed is flowing back towards her.’
      • ‘Greece is hot in the summer, so make like the locals: take long siestas, then stay up late, letting the kids play in the cool of the night while you linger in a taverna.’
      • ‘He is really on his way to pick berries, isn't he, in the cool of the morning.’
      • ‘The lizards are active for several hours during the relative cool of morning and again in the early evening.’
      • ‘That girl had walked with Carlos once down this avenue, once in the cool of the evening, to see a foreign film.’
      • ‘Summers at Valley Forge are miserably hot and sticky - not at all like the breezy cool of the Kenyan highlands.’
      • ‘In the cool of the evening, the inn was abuzz with activity.’
  • 2Calmness; composure.

    ‘he recovered his cool and then started laughing at us’
    • ‘Losing her temper and cool with the various journalists tasked to interview her seemed only to increase the public's antipathy towards her as a mother.’
    • ‘Jason was shocked, he had never seen Vanessa lose her cool and show an emotion.’
    • ‘For all her cool and calmness, she liked insulting my older brother.’
    • ‘What it's all about really is keeping your cool under pressure in the sunny days ahead.’
    • ‘Hopefully, he'll recover his stony-faced cool in time to thwart the intergalactic threat.’
    • ‘His point guard play is a picture of composure and cool.’
  • 3The quality of being fashionably attractive or impressive.

    ‘all the cool of high fashion’
    • ‘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.’


  • 1Become or cause to become less hot.

    [no object] ‘we dived into the river to cool off’
    figurative ‘his feelings for her took a long time to cool’
    [with object] ‘cool the pastry for five minutes’
    • ‘The weather was beginning to cool, and the wind was blowing gently throughout the bushes and trees.’
    • ‘At the end of the treatment, the samples were rapidly cooled to room temperature.’
    • ‘It was scorching hot and, at some point in the afternoon when we'd all drunk a lot, some of the lads decided that it was time to cool off in the pool.’
    • ‘After they had cooled off in the sea, everyone walked over to the rocky side of the shore.’
    • ‘It started to cool off today, at last, much to Dolly's relief.’
    • ‘Turn out on a rack to cool completely, then chill for at least two hours before serving.’
    • ‘You couldn't imagine a hotter location during the day, but at night it cooled off.’
    • ‘Remove from heat once this temperature is reached, cool and store for use as needed.’
    • ‘Some were using the fountains to cool off because it was so hot!’
    • ‘Remove the cake from its tin and leave to cool on a cooling rack.’
    • ‘I'll return to the tidying and cataloguing when the weather cools down a bit.’
    • ‘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.’
    • ‘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 molten lava in contact with the air cools quickly to form a skin over the flow.’
    • ‘Drain, reserving one cup cooking liquid, and cool to room temperature.’
    • ‘The temperatures rarely reach into the 90s during the day and cool off dramatically at night.’
    • ‘If the weather is a bit warm, do the baking earlier and let the vegetables and cheese cool to room temperature before serving.’
    • ‘We let these cool on the cooling rack and we made the icing.’
    • ‘Remove from the oven and set aside to cool in the tin.’
    • ‘The downpour cooled off the searing heat but failed to ease the city's looming water shortage.’
    chill, refrigerate, make cold, make colder
    get cold, get colder, cool down, lose heat
    View synonyms
    1. 1.1Become or cause to become 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’
      • ‘Just don't let it warm your heart so much that you let your anger cool.’
      • ‘By time he had gotten his food and sat down at a table in the corner, he had cooled off a bit.’
      • ‘The police were called to restore calm as Lee cooled down in the changing rooms.’
      • ‘I am just going to take a month off to give him time to cool off a little and think twice about his insane plan.’
      • ‘But at least with letters you have time to cool off or sober up before you send an insulting missive winging through the ether.’
      • ‘Jean had hopefully cooled off from this morning, and Roger didn't want to anger her again by being late.’
      • ‘Try not to bold it against her if she needs more time than you to cool off.’
      • ‘Antony drove them back to the shed, he had cooled off a bit, and was in the process of changing the subject.’
      • ‘The agreement appeared to cool off tempers among local pensioners, as no rallies were reported in the Moscow region on Thursday.’
      • ‘They eventually calmed me down a bit, told me to leave the area and cool off.’
      • ‘Vicky breathed in the calm night air, but no amount of tranquility could cool her off.’
      • ‘We well understood that it was to cool us down, to take the wind out of our sails.’
      • ‘"He is quick to anger, but he cools down very fast, " said an association office bearer.’
      • ‘We literally had to pin him down until he cooled off.’
      • ‘Mr Smith said that the drivers could have walked out on Christmas Eve but had decided to choose New Year's Day to give all parties a chance to cool off.’
      • ‘By the time lunch came around Aliena had cooled down and was hoping she stayed that way.’
      • ‘Maybe by the time school let out and she came home from work she would have cooled off a bit.’
      • ‘There is need to cool off our tempers and stop fanning the embers of dissent and revolt for united we shall stand and divided we shall surely fall.’
      • ‘Eventually some of the remarks got a bit unpleasant and the ability to comment was temporarily suspended to allow everyone time to cool off.’
      • ‘He would allow her to come back to him after she cooled off, and he would say nothing of it.’
      calm down, recover one's self-control, regain one's self-control, recover one's composure, regain one's composure, compose oneself, control oneself, pull oneself together, simmer down
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    2. 1.2Recover from strenuous physical exertion by doing gentle stretches and exercises; warm down.
      • ‘He had just finished sparring, and was doing a little freestyle to cool down a bit.’
      • ‘Always warm up before activity, stretch gently and cool down at the end of exercise.’
      • ‘Before and after the test, be sure to walk for several minutes to let your body warm up and cool down.’
      • ‘Just as Bethany began to tell her story, the team was ordered back into the pool for a cool down set.’
      • ‘All the teams ran up to the pavilion to get some Gatorade and cool down before the next game began.’
      • ‘It also features a warm up and cool down section, lasting six minutes each.’


  • cool one's heels

    • Be kept waiting.

      • ‘Why does Irwine want Adam to cool his heels for ten days, doing nothing?’
      • ‘And all this while the King of Spain was left cooling his heels at the bar.’
      • ‘Well, drivers will have to cool their heels in traffic.’
      • ‘When I finally get to them after they've been cooling their heels for five or ten minutes they generally drop a dollar on the bar.’
      • ‘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.’
      • ‘But she can just cool her heels.’
      • ‘You could make an appointment with your doctor for the day after tomorrow - and then cool your heels for 40 minutes in an overheated waiting room.’
      • ‘Joburgers will have to cool their heels with some freezing weather this month, before the summer rains set in.’
      • ‘Perhaps cooling his heels all these years was worthwhile.’
  • cool it

    • informal [usually in imperative]Behave in a less excitable manner.

      ‘“Cool it and tell me why you're so ecstatic.”’
      • ‘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.’
      • ‘I got a certificate saying I've been admitted to the bar, and I've even got a wig, so cool it!’
  • keep (or lose) one's cool

    • informal Maintain (or fail to maintain) a calm and controlled attitude.

      • ‘We'll teach you how to keep your cool and stay calm in tight situations.’
      • ‘There are two kinds: people who freak out, and people who keep their cool.’
      • ‘I finally lost my cool and told a youngster who'd been particularly loud and obnoxious to sit down and be quiet or I'd have him removed by theater staff.’
      • ‘She had to stay calm and keep her cool before the match.’
      • ‘He has kept remarkably calm, refusing to lose his cool in the face of constant provocation.’
      • ‘Jake was cowering under the bridge, shivering, and panting, but trying to keep his cool and not blow his cover.’
      • ‘Despite the fact that he was vastly outnumbered John never lost his cool, stayed calm and came away with a deserved victory.’
      • ‘The next time something is pushing you to the boiling point, stop and think before you lose your cool and blow up.’
      • ‘William somehow managed to keep his cool and retain control of their car.’
      • ‘He's trying to get control by making me lose my cool.’
      become very angry, fly into a rage, explode, blow up, erupt, lose control, go berserk, breathe fire, begin to rant and rave, flare up, boil over
      View synonyms
  • play it cool

    • Make an effort to be or appear to be calm and unemotional.

      • ‘I considered playing it cool, and pretending that I knew all along.’
      • ‘I was too busy playing it cool to realize how stupid I had just been.’
      • ‘I was trying to play it cool, but once we'd landed and were whisked away to our Grandstand seats, I degenerated into excited schoolboy mode.’
      • ‘Mom is playing it cool, but her eyes betray her real emotions.’
      • ‘I fell for her too quickly, really, and she played it cool in them days.’
      • ‘Chantelle's heart jumped into her throat but she played it cool.’
      • ‘Nevertheless Phil and I absolutely fell for each other but for once in my life I played it cool.’
      • ‘He tried to play it cool but I could see that he was nervous.’
      • ‘Obviously I knew what they were talking about but I tried to play it cool, in case it wasn't what I thought it was.’
      • ‘Figuring he was interested, she played it cool.’


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