Cool definition

ko͝ol
(informal) In a casual manner; nonchalantly.

Play it cool.

adverb
37
16
(slang) Very good, pleasing, etc.; excellent.
adjective
14
2
Not suggesting warmth.
adjective
17
6
Marked by calm self-control.

A cool negotiator.

adjective
19
10
To become less warm.

Took a dip to cool off.

verb
16
9
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To make less warm.
verb
24
19
The definition of cool is slightly chilly, but not cold, or a slang term for popular or in style.

An example of cool is typical New England fall weather.

An example of cool is the latest fashionable pair of jeans.

adjective
4
0
A cool place, part, or time.

The cool of early morning.

noun
4
2
Showing dislike or indifference; not cordial.

A cool manner.

adjective
4
2
Calmly impudent or bold.
adjective
4
2
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Excellent; first-rate.

Has a cool sports car; had a cool time at the party.

adjective
2
0
The state or quality of being cool.
noun
4
3
A cool place, time, thing, part, etc.

The cool of the evening.

noun
3
2
(slang) Cool, dispassionate attitude or manner.
noun
3
2
To make cool or colder.
verb
3
2
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(informal) Of a person, knowing what to do and how to behave; considered popular by others.
adjective
1
0
Moderately cold; neither warm nor very cold.
adjective
3
3
(physics) To reduce the molecular or kinetic energy of (an object).
verb
2
2
In a cool manner.
adverb
2
2
Knowledgeable or aware of the latest trends or developments.

Spent all his time trying to be cool.

adjective
0
0
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Acceptable; satisfactory.

It's cool if you don't want to talk about it.

adjective
0
0
(slang) In agreement or accord.
adjective
0
0
Not excited; calm; composed.

Cool in an emergency.

adjective
0
0
(informal) Emotionally uninvolved; uncommitted; dispassionate.
adjective
0
0
Having a slightly low temperature; mildly or pleasantly cold.
adjective
0
0
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Allowing or suggesting heat relief.

A cool grey colour.

adjective
0
0
Of a person, not showing emotion, calm and in self-control.
adjective
0
0
Unenthusiastic, lukewarm, skeptical.

His proposals had a cool reception.

adjective
0
0
Calmly audacious.

In control as always, he came up with a cool plan.

adjective
0
0
(informal) In fashion, part of or fitting the in crowd; originally hipster slang.
adjective
0
0
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(informal) Of an action, all right; acceptable; that does not present a problem.

Is it cool if I sleep here tonight?

adjective
0
0
(informal) A dismissal of a comment perceived as boring or pointless.

Ok, that's cool man, but I don't care.

Cool story bro.

adjective
0
0
(informal) Of a person, not upset by circumstances that might ordinarily be upsetting.

I'm completely cool about my girlfriend leaving me.

adjective
0
0
Applied facetiously to a sum of money, commonly as if to give emphasis to the largeness of the amount.
adjective
0
0
A moderate or refreshing state of cold; moderate temperature of the air between hot and cold; coolness.

In the cool of the morning.

noun
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0
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noun
0
0
(literally intransitive) To lose heat, to get colder.

I like to let my tea cool before drinking it so I don't burn my tongue.

verb
0
0
To make cooler, less warm.
verb
0
0
(figuratively, intransitive) To become less intense, e.g. less amicable or passionate.

Relations cooled between the USA and the USSR after 1980.

verb
0
0
To make less intense, e.g. less amicable or passionate.
verb
0
0
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(slang) Entire; full.

Worth a cool million.

adjective
0
1
Marked by control of the emotions; restrained.

Cool jazz.

adjective
0
1
Marked by indifference, disdain, or dislike; unfriendly or unresponsive.

A cool greeting; was cool to the idea of higher taxes.

adjective
4
6
Neither warm nor very cold; moderately cold.

Fresh, cool water; a cool autumn evening.

adjective
1
3
To become calmer.

Needed time for tempers to cool.

verb
1
3
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Composure; poise.
noun
1
3
Tending to reduce discomfort in warm or hot weather.

Cool clothes.

adjective
1
3
To become cool or colder.
verb
1
3
A family of tools from Sterling Software for modeling and developing enterprise applications for every major hardware platform. Later owned and marketed by Computer Associates (CA), which purchased Sterling Software in 2000, the product line continues to provide business and data modeling for the enterprise. Look for the COOL products under the CA name of "Advantage Developer Series."
1
3
Of, relating to, or characteristic of colors, such as blue and green, that produce the impression of coolness.
adjective
3
6
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Giving or suggesting relief from heat.

A cool breeze; a cool blouse.

adjective
1
4
To make less ardent, intense, or zealous.

Problems that soon cooled my enthusiasm for the project.

verb
1
5
(slang) cool it
  • To calm down; relax.
  • To stop doing something.
idiom
1
2
(informal) cool (one's) heels
  • To wait or be kept waiting.
idiom
1
2
cool down
  • to lower the body temperature, pulse, etc. after vigorous exercise
  • to become less heated, passionate, agitated, angry, etc.
idiom
1
2
cool it
  • to calm down
idiom
1
2
cool off
  • to calm down
  • to lose enthusiasm, interest, etc.
idiom
1
2
(slang) cool out
  • to make or become relaxed, calm, mollified, etc.
    Soothing words cooled him out.
idiom
1
2
play it cool
  • to exercise strict control over one's emotions; stay aloof, unenthusiastic, or uncommitted
idiom
1
2

Other Word Forms

Adjective

Base Form:
cool
Comparative:
cooler
Superlative:
coolest

Origin of cool

  • Middle English cole from Old English cōl gel- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English colen, from Old English cōlian (“to cool, grow cold, be cold”), from Proto-Germanic *kōlēną (“to become cold”), from Proto-Indo-European *gel- (“to freeze”). Cognate with Dutch koelen (“to cool”), German kühlen (“to cool”), Swedish, häftig (“cool”)kyla (“to cool, refrigerate”). Also partially from Middle English kelen, from Old English cēlan (“to cool, be cold, become cold”), from Proto-Germanic *kōlijaną (“to cool”), altered to resemble the adjective cool. See keel.

    From Wiktionary

  • From Middle English, from Old English cōl (“cool, cold, tranquil, calm”), from Proto-Germanic *kōlaz, *kōlijaz (“cool”), from Proto-Indo-European *gelǝ- (“cold”). Cognate with Dutch koel (“cool”), German kühl (“cool”). Related to cold.

    From Wiktionary