"coolness" in the noun sense
1. coolness, imperturbability, imperturbableness
calm and unruffled self-assurance
"he performed with all the coolness of a veteran"
2. chilliness, coolness, nip
the property of being moderately cold
"the chilliness of early morning"
3. coolness, nervelessness
fearless self-possession in the face of danger
4. coldness, coolness, frigidity, frigidness, iciness, chilliness
a lack of affection or enthusiasm
"a distressing coldness of tone and manner"
Source: WordNet® (An amazing lexical database of English)
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