coolness /ˈkuːlnəs/ noun5 •Moderate chilliness.I know a place of all sweet coolnesses; / a little island, like an emerald, set / in the clear argent of a river, that is / Itself a shining net — 1883 •Calmness, confidence, or level-headedness.De Coude was the personification of coolness—was he not the best shot in France? — 1913 •(slang) Social advantage or enviability, typically due to traits like popularity, confidence, skill, or fashion. •Indifference or an instance of indifference; lack of friendliness or interest not necessarily rising to hostility. •(old-fashioned) Conflict or hostility or an instance of such that stands in contrast to expected friendliness or interest.In the midst of enemies, Irish and English, Court treacheries and coolnesses, Strafford depended solely upon Laud, and no one other support. — 1892 formscoolnesses