Essential Meaning of cool
1 : somewhat cold : not warm or hot a cool breeze The weather is cool today. See More ExamplesThe surface is cool to the touch. The plant grows best in cool climates. I'm feeling a little cool. a cool refreshing drink It's cooler [=less warm or hot] in the shade. This is the coolest [=least warm or hot] summer on record.
2 : made of a light, thin material that helps you stay cool We changed into some cooler clothes.
3 : able to think and act in a calm way : not affected by strong feelings It is important to keep a cool head in a crisis. = It is important to keep/stay cool in a crisis. [=it is important to remain calm in a crisis] She remained calm, cool, and collected. He is a cool customer. [=he is someone who remains calm and is not easily upset]
Full Definition of cool
(Entry 1 of 4)
1 : moderately cold : lacking in warmth The plant grows best in cool climates.
2a : marked by steady dispassionate calmness and self-control a cool and calculating businessperson
b : lacking ardor or friendliness a cool impersonal manner
c of jazz : marked by restrained emotion and the frequent use of counterpoint
d : free from tensions or violence We used to fight, but we're cool now.
3 —used as an intensive a cool million dollars
4 : marked by deliberate effrontery or lack of due respect or discretion a cool reply
5 : facilitating or suggesting relief from heat a cool dress
6a of a color : producing an impression of being cool specifically : of a hue in the range violet through blue to green
cooled; cooling; cools
Definition of cool (Entry 2 of 4)
1 : to become cool : lose heat or warmth placed the pie in the window to cool —sometimes used with off or down
2 : to lose ardor or passion His anger cooled.
1 : to make cool : impart a feeling of coolness to cooled the room with a fan —often used with off or down A swim cooled us off a little.
2a : to moderate the heat, excitement, or force of : calm cooled her growing anger
b : to slow or lessen the growth or activity of —usually used with off or down wants to cool off the economy without freezing it — Newsweek
cool itcool one's heels
: to calm down : go easy The word went out to the young to cool it.— W. M. Young
: to wait or be kept waiting for a long time especially from or as if from disdain or discourtesy
Definition of cool (Entry 3 of 4)
1 : a cool time, place, or situation the cool of the evening
2a : absence of excitement or emotional involvement : detachment … must surrender his fine cool and enter the closed crazy world of suicide …— Wilfrid Sheed
3 : hipness
Definition of cool (Entry 4 of 4)
: in a casual and nonchalant manner play it cool
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