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
As the weather has gotten cooler and the pandemic news grimmer, we’ve cast our eyes ahead toward the holidays and the long winter to come and joined the hordes of Americans buying fire pits.This cocktail can keep you warm around the fire pit — and you can make it there, too | M. Carrie Allan | November 20, 2020 | Washington Post
It was a cool June evening just before sunset on a village road on Langkawi Island, Malaysia.On a cool night in Malaysia, scientists track mysterious colugos across the treetops | Yao-Hua Law | November 20, 2020 | Science News
Water gets denser as it is cooled to 4° C, but becomes less dense as it is cooled further.Supercooled water has been caught morphing between two forms | Emily Conover | November 19, 2020 | Science News
The crew will also attempt to grow radishes, experiment with rock-munching microbes that could assist with future space mining operations, and test drive the cooling system of NASA’s next generation spacesuit, among other experiments.SpaceX and NASA officially flew people into space. What’s next? | Charlie Wood | November 18, 2020 | Popular-Science
That’s just a way of life—and why they generally need fans to stay cool.Apple’s M1 chip makes the new MacBook Air shockingly good | Stan Horaczek | November 18, 2020 | Popular-Science
Kim approached her career with tenacity and sincerity; any sort of coolness, remove, or privacy was not a luxury she could afford.
Each time Emma Stone or Mila Kunis have a new movie coming out, a flurry of odes to their “coolness” hit the web.
As usual, I smell … perfume—but possibly a perfume with a bit of coolness.
The remoteness, the coolness, the lecturing style is now a liability.
You have to credit the Obama campaign—and the man at the top—with a remarkable degree of skill matched by coolness and nerve.Obama, Clinton Scored Back to Back Home Runs With Their Speeches | Robert Shrum | September 8, 2012 | THE DAILY BEAST
This was "assault" in truth, and oddly enough seemed to restore the victim to perfect coolness.Dorothy at Skyrie | Evelyn Raymond
"I am a very sincere friend of your stepfather, and I hope a sincere friend of yours also," he said with perfect coolness.The Doctor of Pimlico | William Le Queux
During meal-times, a large punkah is employed to diffuse an agreeable degree of coolness through the apartment.A Woman's Journey Round the World | Ida Pfeiffer
Had they been alone he might have observed her coolness to him; but, with guests to entertain, he neither saw nor suspected it.Elster's Folly | Mrs. Henry Wood
The coolness and presence of mind of the Prince, no doubt, preserved the city from much confusion and misery.Journal of a Voyage to Brazil | Maria Graham
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.