cool

Adjective

• 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
    

• (used of a number or sum) without exaggeration or qualification
  • a cool million bucks
    

• psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike
  • relations were cool and polite
    
  • a cool reception
    
  • cool to the idea of higher taxes
    

• (color) inducing the impression of coolness; used especially of greens and blues and violets
  • cool greens and blues and violets
    

• marked by calm self-control (especially in trying circumstances); unemotional
  • play it cool
    
  • keep cool
    
  • stayed coolheaded in the crisis
    
  • the most nerveless winner in the history of the tournament
    

• neither warm nor very cold; giving relief from heat
  • a cool autumn day
    
  • a cool room
    
  • cool summer dresses
    
  • cool drinks
    
  • a cool breeze
    

Noun

• great coolness and composure under strain
  • keep your cool
    

• the quality of being at a refreshingly low temperature
  • the cool of early morning
    

Verb

• lose intensity
  • His enthusiasm cooled considerably
    

• loose heat
  • The air cooled considerably after the thunderstorm
    

• make cool or cooler
  • Chill the food
    

Related words

• Synonyms: 
  coolheaded , nerveless , aplomb , assuredness , poise , sang-froid , cool off , cool down , chill
• Antonyms: 
  warm , heat , hot up , heat up