coolness in WordNet English dictionary

1. the property of being moderately cold
   "the chilliness of early morning"
   chilliness  coolness  nip 
   
2. a lack of affection or enthusiasm
   "a distressing coldness of tone and manner"
   coldness  coolness  frigidity  frigidness  iciness  chilliness 
   
3. fearless self-possession in the face of danger
   coolness  nervelessness 
   
4. calm and unruffled self-assurance
   "he performed with all the coolness of a veteran"
   coolness  imperturbability  imperturbableness