Synonyms for cool

modified

1. 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.

   Antonyms tepid, warm*, heated.

2. Calm

   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.

3. Not cordial

   distant, disapproving, lukewarm; see aloof, indifferent 1, unfriendly 2.

4. *Excellent

   neat*, great*, with-it*; see excellent, fashionable, modern 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 indifference

play it cool*

verb

1. To become cool

   lose heat, moderate, lessen, freeze, reduce, calm, chill, cool off, become cold, be chilled to the bone, become chilly; see also freeze 1.

   Antonyms warm up, thaw*, heat.

2. To cause to become cool

   chill, refrigerator, ice, temper, mitigate, moderate, lessen, abate, allay, calm, air-cool, air-condition, precool, frost, reduce the temperature of, freeze, quick-freeze; see also freeze 2.

   Antonyms burn*, warm, defrost.