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1. Neither warm nor very cold; giving relief from heat
   "a cool autumn day"; "a cool room"; "cool summer dresses"; "cool drinks"; "a cool breeze"
    
2. Marked by calm self-control (especially in trying circumstances); unemotional
   "play it cool"; "keep cool";
   - coolheaded, nerveless
    
3. [informal] Being satisfactory or in satisfactory condition
   - all right, fine, o.k., OK, okay, hunky-dory [informal], alright, jake [N. Amer, Austral, NZ, informal]
    
4. [informal] Used of a quantity or amount (especially of money) for emphasis
   "a cool million bucks"
    
5. [informal] Fashionable and attractive at the time; often skilled or socially adept
   "he's a cool dude"; "that's cool"; "Mary's dress is really cool"; "it's not cool to arrive at a party too early"
    
6. Inducing the impression of coolness; used especially of greens and blues and violets when referring to colour
   "cool greens and blues and violets"; "the cool sound of rushing water"
    
7. Psychologically cool and unenthusiastic; unfriendly, unresponsive or showing dislike
   "relations were cool and polite"; "a cool reception"; "cool to the idea of higher taxes"

1. Make cool or cooler
   "cool the food"; "cool down the food";
   - chill, cool down
    
2. Lose heat
   "The air cooled considerably after the thunderstorm";
   - chill, cool down
    
3. Lose intensity
   "His enthusiasm cooled considerably";
   - cool off, cool down

1. The quality of being at a refreshingly low temperature
   "the cool of early morning"
    
2. Great coolness and composure under strain
   "keep your cool";
   - aplomb, assuredness, poise, sang-froid, sangfroid

Derived forms: cooling, coolest, cools, cooled, cooler

See also: air-conditioned, air-cooled, caller, cold, composed, emotionalism, emotionality, fashionable, hip [informal], precooled, satisfactory, stylish, temperature, unagitated, unemotional, unfriendly, unqualified, unresponsive, water-cooled

Type of: alter, calm, calmness, change, change state, cold, coldness, collectedness, composure, equanimity, frigidity, frigidness, low temperature, modify, turn, unflappability

Antonym: warm

Encyclopedia: Cool, Cool Water