Another word for cool
Having a low temperature
cooling, chilly, frosty, somewhat cold, moderately cold, heat-repelling, shivery, chill, chilling, refrigerated, iced, air-conditioned, crisp, fresh, snappy, nippy, nipping, biting, bracing, brisk, refreshing; see also cold 1.
unruffled, imperturbable, composed, collected, calm, levelheaded, nonchalant, unexcited, unflappable, coolheaded, dispassionate, uninvolved, unemotional, restrained, deliberate, controlled, self-possessed, serene, relaxed, together*; see also calm 1.
cool, in this comparison, implies freedom from the heat of emotion or excitement, suggesting a calm, dispassionate attitude or a controlled alertness in difficult circumstances to keep cool in an emergency; composed suggests readiness to meet a trying situation through self-possession or the disciplining of one's emotions; collected stresses being in full command of one's faculties or emotions in a distracting situation; unruffled suggests the maintenance of poise or composure in the face of something that might agitate or embarrass one; nonchalant stresses a cool lack of concern or casual indifferenceplay it cool*
To become cool
Antonyms warm up, thaw*, heat.
To cause to become cool
Another word for cooladjective
Marked by a low temperature:chill, chilly, cold, nippy, shivery. See hot
Not easily excited, even under pressure:calm, collected, composed, cool-headed, detached, even1, even-tempered, imperturbable, nonchalant, possessed, unflappable, unruffled. See calm
Not friendly, sociable, or warm in manner:aloof, chill, chilly, distant, offish, remote, reserved, reticent, solitary, standoffish, unapproachable, uncommunicative, undemonstrative, withdrawn. See attitude, hot
Particularly excellent:divine, fabulous, fantastic, fantastical, glorious, marvelous, sensational, splendid, superb, terrific, wonderful. (Informal) dandy, dreamy, great, ripping, super, swell, tremendous. (Slang) groovy, hot, keen1, neat, nifty. Idiom: out of this world. See good
To bring one's emotions under control:collect1, compose, contain, control, simmer down. Idiom: cool it. See restraint