coolness

From Middle English colnes, colnesse, from Old English cōlnes, cēlnes (“coolness; cool air, breeze”), equivalent to cool +‎ -ness.

coolness (usually uncountable, plural coolnesses)

1. (uncountable) The state of being cool, i.e. chilly.
2. (countable) The result or product of being cool, i.e. chilly.
3. (uncountable) The state of being cool, i.e. calm.
   • 2018 June 18, Phil McNulty, “Tunisia 1 - 2 England”, in BBC Sport‎:

     Luckily for England, they have a world-class striker with a golden touch in Kane, who was coolness personified to carefully direct in the winner.

4. Indifference; lack of passion or interest.
5. (slang, uncountable) The state of being cool, i.e. good or pleasing.
6. (slang, countable) The result or product of being cool, i.e. good or pleasing.

• consoles