cool

Universal Words adjective, verb, noun adjective (cooler, coolest) fairly cold 1 fairly cold; not hot or warm: a cool breeze / drink / climate * Cooler weather is forecast for the weekend. * Let's sit in the shade and keep cool. * Store lemons in a cool dry place. colours 2 making you feel pleasantly cool: a room painted in cool greens and blues calm 3 calm; not excited, angry or emotional: Keep cool! * She tried to remain cool, calm and collected (= calm). * He has a cool head (= he stays calm in an emergency). not friendly / enthusiastic 4 not friendly, interested or enthusiastic: She was decidedly cool about the proposal. * He has been cool towards me ever since we had that argument. * They gave the Prime Minister a cool reception. * Her voice was cool and dismissive. approving 5 (informal) used to show that you admire or approve of something because it is fashionable, attractive and often different: You look pretty cool with that new haircut. * It's a cool movie. 6 (spoken) people say Cool! or That's cool to show that they approve of sth or agree to a suggestion: 'We're meeting Jake for lunch and we can go on the yacht in the afternoon.' 'Cool!' confident 7 (informal) calm and confident in a way that lacks respect for other people, but makes people admire you as well as disapprove: She just took his keys and walked out with them, cool as you please. * He was a cool customer. No one would think to look for him in a city where he'd been arrested for killing a cop. money 8 [onlybeforenoun] used about a sum of money to emphasize how large it is: The car cost a cool thirty thousand. fine 9 used to say that sth is acceptable and not a problem for you: 'Can you come at 10.30 tomorrow?' 'That's cool.' * (especially AmE, spoken) I was surprised by her promotion, but I'm cool with it. seealsoCOOLLY, COOLNESS IDIOMS (as) cool as a cucumber very calm and controlled, especially in a difficult situation play it cool (informal) to deal with a situation in a calm way: For once I felt uncertain about blurting out my real feelings. I decided to play it cool. verb become colder 1 to become or to make sb/sth become cool or cooler: [V] Glass contracts as it cools. * Melt the chocolate and allow it to cool slightly. * [VN] The cylinder is cooled by a jet of water. * The evening breeze cooled her face. become calmer 2 [V] to become calmer, less excited or less enthusiastic: I think we should wait until tempers have cooled. * Relations between them have definitely cooled (= they are not as friendly with each other as they were). IDIOMS cool it! (informal) used to tell sb to be calmer and less excited or angry: Hey! Cool it! Don't get so excited! cool your heels (informal) to have to wait for sb/sth PHRASALVERBS cool down / off 1 to become cool or cooler: We cooled off with a swim in the lake. 2 to become calm, less excited or less enthusiastic: I think you should wait until she's cooled down a little. cool sb<->down / off 1 to make sb feel cooler: Drink plenty of cold water to cool yourself down. 2 to make sb calm, less excited or less enthusiastic: A few hours in a police cell should cool him off. cool sth<->down / off to make sth cool or cooler noun (the cool) [sing.] cool air or a cool place: the cool of the evening IDIOMS keep your cool (informal) to remain calm in a difficult situation: He kept his cool on the convention floor when he was heckled by a young Republican. lose your cool (informal) to become angry or excited: I lost my cool and shouted at them.