coolness
cool-ness
noun
The state or quality of being moderately cold; a low temperature.
"The morning coolness was refreshing."
noun
The quality of being fashionable, impressive, or maintaining composure under pressure.
"His coolness under pressure was admirable."
Thesaurus
Synonyms: chilliness, coldness, frigidity, iciness, frigidness, imperturbableness, imperturbability, nervelessness, nip