cool

Meanings

1. 1
   adj

   marked by calm self-control especially in trying circumstances; originally AAVE

   I like to think that I'm pretty cool in stressful times.

2. 2
   adj

   (used of a number or sum) without exaggeration or qualification

   a cool million bucks

3. 3
   noun

   great coolness and composure under strain

   keep your cool

4. 4
   noun

   the quality of being at a refreshingly low temperature

   the cool of early morning

5. 5
   verb

   to loose heat

   The air cooled considerably after the thunderstorm

6. 6
   verb

   to lose intensity

   Our enthusiasm cooled considerably.

7. 7
   adj

   Of a mildly low temperature.

   I like cool weather the most 'cause it's not too hot to wear a jacket but I won't be too cold in my shorts.

8. 8
   adj

   Allowing or suggesting heat relief.

   Linen has made cool and breathable clothing for millennia.

Etymology

From Middle English colen, from Old English cōlian (“to cool, grow cold, be cold”), from Proto-West Germanic *kōlēn (“to become cold”), from Proto-Indo-European *gel- (“to freeze”). Cognate with Dutch koelen (“to cool”), German kühlen (“to cool”), Swedish kyla (“to cool, refrigerate”). Also partially from Middle English kelen, from Old English cēlan (“to cool, be cold, become cold”), from Proto-West Germanic *kōlijan, from Proto-Germanic *kōlijaną (“to cool”), altered to resemble the adjective cool. See keel.