coolish

adjective

1. moderately cold; neither warm nor very cold
2. tending to reduce discomfort in warm or hot weather: cool clothes
3. 1. not excited; calm; composed: cool in an emergency
   2. ☆ marked by control of the emotions; restrained: cool jazz
   3. Slang emotionally uninvolved; uncommitted; dispassionate
4. showing dislike or indifference; not cordial: a cool manner
5. calmly impudent or bold
6. not suggesting warmth: said of colors in the blue-green end of the spectrum
7. Informal without exaggeration: he won a cool thousand dollars
8. ☆ Slang very good, pleasing, etc.; excellent

Origin: ME & OE col < IE base *gel-, cold, to freeze > chill, cold, L gelu

adverb

noun

1. a cool place, time, thing, part, etc.: the cool of the evening
2. ☆ Slang cool, dispassionate attitude or manner

intransitive verb

Origin: ME colien < OE colian, to cool

transitive verb