ˈkülnə̇s noun
( -es )
: the quality or state of being cool: as
a. : chilliness
the coolness of the night
b. : calmness , self-possession
showed great coolness and courage in a desperate conflict — L.C.Hatch
c. : lack of ardor, enthusiasm, or friendly warmth
a long-standing coolness between the two families
d. : self-assurance
takes possession of the territory with all the coolness of a usurper — Mary Cowden-Clarke