cool

great coolness and composure under strain

“keep your cool”

psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike

“relations were cool and polite”

the quality of being at a refreshingly low temperature

“the cool of early morning”

used of a quantity or amount (especially of money) for emphasis

“a cool million bucks”

marked by calm self-control (especially in trying circumstances); unemotional

“play it cool”

make cool or cooler

loose heat

“The air cooled considerably after the thunderstorm”

lose intensity

“His enthusiasm cooled considerably”

being satisfactory or in satisfactory condition

fashionable and attractive at the time; often skilled or socially adept

“he's a cool dude”

inducing the impression of coolness; used especially of greens and blues and violets when referring to color

“cool greens and blues and violets”

neither warm nor very cold; giving relief from heat

“a cool autumn day”