coolness

Short definition from Wiktionary

Noun

1. 1
   Moderate chilliness.
2. 2
   Calmness, confidence, or level-headedness.
3. 3
   Conflict or hostility or an instance of such that stands in contrast to expected friendliness or interest.
4. 4
   Indifference or an instance of indifference; lack of friendliness or interest not necessarily rising to hostility.
5. 5
   Social advantage or enviability, typically due to traits like popularity, confidence, skill, or fashion.