cool

(noun) the quality of being at a refreshingly low temperature. Example: "The cool of early morning."

(noun) great coolness and composure under strain. Synonyms: aplomb, assuredness, poise, sang-froid. Example: "Keep your cool."

(verb) make cool or cooler. Synonyms: chill, cool down. Example: "Chill the food."

(verb) loose heat. Synonyms: chill, cool down. Example: "The air cooled considerably after the thunderstorm."

(verb) lose intensity. Synonyms: cool off, cool down. Example: "His enthusiasm cooled considerably."

(adj) neither warm nor very cold; giving relief from heat. Synonyms: cool (vs. warm). Examples: "A cool autumn day." "A cool room." "Cool summer dresses." "Cool drinks." "A cool breeze."

(adj) marked by calm self-control (especially in trying circumstances); unemotional. Synonyms: coolheaded, nerveless. Examples: "Play it cool." "Keep cool." "Stayed coolheaded in the crisis." "The most nerveless winner in the history of the tournament."

(adj) (color) inducing the impression of coolness; used especially of greens and blues and violets. Synonyms: cool (vs. warm). Example: "Cool greens and blues and violets."

(adj) psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike. Synonyms: cool (vs. warm). Examples: "Relations were cool and polite." "A cool reception." "Cool to the idea of higher taxes."

(adj) (used of a number or sum) without exaggeration or qualification. Example: "A cool million bucks."

(adj) fashionable and attractive at the time; often skilled or socially adept. Examples: "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."