moderately cold; neither warm nor cold: a rather cool evening.
feeling comfortably or moderately cold: I'm perfectly cool, but open the window if you feel hot.
imparting a sensation of moderate coldness or comfortable freedom from heat: a cool breeze.
permitting such a sensation: a cool dress.
not excited; calm; composed; under control: to remain cool in the face of disaster.
not hasty; deliberate: a cool and calculated action.
lacking in interest or enthusiasm: a cool reply to an invitation.
lacking in warmth or cordiality: a cool reception.
calmly audacious or impudent: a cool lie.
aloof or unresponsive; indifferent: He was cool to her passionate advances.
unaffected by emotions; disinterested; dispassionate: She made a cool appraisal of all the issues in the dispute.
Informal. (of a number or sum) without exaggeration or qualification: a cool million dollars.
(of colors) with green, blue, or violet predominating.
great; fine; excellent: a real cool comic.
characterized by great facility; highly skilled or clever: cool maneuvers on the parallel bars.
socially adept: It's not cool to arrive at a party too early.
acceptable; satisfactory; okay: If you want to stay late, that's cool.
(used to express acceptance): Okay, cool! I'll be there at 10:00.
(used to express approval, admiration, etc.): He got the job? Cool!
something that is cool; a cool part, place, time, etc.: in the cool of the evening.
calmness; composure; poise: an executive noted for maintaining her cool under pressure.
to become cool (sometimes followed by down or off): The soup cooled in five minutes. We cooled off in the mountain stream.
to become less ardent, cordial, etc.; become moderate.
to make cool; impart a sensation of coolness to.
to lessen the ardor or intensity of; allay; calm; moderate: Disappointment cooled his early zealousness.
cool down. See entry at cooldown.
cool off, Informal. to become calmer or more reasonable: Wait until he cools off before you talk to him again.
cool out, Slang. to calm or settle down; relax: cooling out at the beach.
Idioms about cool
- cool·ing·ly, adverb
- cool·ish, adjective
- cool·ly, adverb
- cool·ness, noun
- o·ver·cool, adjective
- o·ver·cool·ly, adverb
- o·ver·cool·ness, noun
- re·cool, verb
- sub·cool, verb (used with object)
- ul·tra·cool, adjective
- un·cooled, adjective
- well-cooled, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use cool in a sentence
So, the water cooled in the salt slush was definitely colder than the water cooled in simple ice.
According to a Monday blog post from Microsoft, the consistently cool underwater temperatures made it possible to use similar heat-exchange plumbing to the kind found on submarines.Microsoft hails success of its undersea data center experiment—and says it could have implications on dry land, too | David Meyer | September 15, 2020 | Fortune
We handled some of the work, so you can get your cool java sooner.
While it seems everyone wants to keep pace with the cool kids, everyone can’t keep pace with the cool kids.
We look at the trends, and it’s a reason we started a delivery service before it was cool.Momofuku’s David Chang on the big changes the restaurant industry needs to make to survive | Beth Kowitt | September 14, 2020 | Fortune
It’s cool because Trenchmouth opened for Green Day in the early ‘90s in Wisconsin.Coffee Talk with Fred Armisen: On ‘Portlandia,’ Meeting Obama, and Taylor Swift’s Greatness | Marlow Stern | January 7, 2015 | THE DAILY BEAST
She came to sound check, that was the first time we ever performed it, and it was really cool.Deer Tick's John McCauley on Ten Years in Rock and Roll | James Joiner | January 2, 2015 | THE DAILY BEAST
Triton prices the 1000/3 LP at a cool $3.15 million—inclusive of pilot training.The Most Exciting New Hotels, Restaurants, and Submarines of 2014 | Charlie Gilbert | December 29, 2014 | THE DAILY BEAST
Allow beans to cool completely then remove to a paper towel-lined plate to dry.Make Carla Hall’s Crispy Shallot Green Bean Casserole | Carla Hall | December 27, 2014 | THE DAILY BEAST
The Ismael brothers even make an effort to look cool, if not fashionable, by local standards.
Things looked anxious for a bit, but by this morning's dawn all are dug in, cool, confident.Gallipoli Diary, Volume I | Ian Hamilton
It mounted straight as a plume for a little way, until it met the cool air of evening which was beginning to fall.The Bondboy | George W. (George Washington) Ogden
He has told me that their society produced on him the effect of the cool hands of saints against his cheek.The Joyous Adventures of Aristide Pujol | William J. Locke
I laved his pain-twisted face with the cool water and let a few drops trickle into his open mouth.Raw Gold | Bertrand W. Sinclair
As for him, he much preferred the darkness of his cool, damp galleries under the ground.The Tale of Grandfather Mole | Arthur Scott Bailey
British Dictionary definitions for cool
moderately cold: a cool day
comfortably free of heat: a cool room
producing a pleasant feeling of coldness: a cool shirt
able to conceal emotion; calm: a cool head
lacking in enthusiasm, affection, cordiality, etc: a cool welcome
calmly audacious or impudent
informal (esp of numbers, sums of money, etc) without exaggeration; actual: a cool ten thousand
(of a colour) having violet, blue, or green predominating; cold
(of jazz) characteristic of the late 1940s and early 1950s, economical and rhythmically relaxed
informal sophisticated or elegant, esp in an unruffled way
informal excellent; marvellous
not standard in a cool manner; coolly
coolness: the cool of the evening
slang calmness; composure (esp in the phrases keep or lose one's cool)
slang unruffled elegance or sophistication
(usually foll by down or off) to make or become cooler
(usually foll by down or off) to lessen the intensity of (anger or excitement) or (of anger or excitement) to become less intense; calm down
cool it (usually imperative) slang to calm down; take it easy
cool one's heels to wait or be kept waiting
- See also cool out
- coolingly, adverb
- coolingness, noun
- coolish, adjective
- coolly, adverb
- coolness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Other Idioms and Phrases with cool
In addition to the idioms beginning with cool
- cool as a cucumber
- cool down
- cool it
- cool off
- cool one's heels
- cool out
- keep cool
- keep one's cool
- play it cool
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.