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cool

[kool] /kul/
adjective, cooler, coolest.
1.
moderately cold; neither warm nor cold:
a rather cool evening.
2.
feeling comfortably or moderately cold:
I'm perfectly cool, but open the window if you feel hot.
3.
imparting a sensation of moderate coldness or comfortable freedom from heat:
a cool breeze.
4.
permitting such a sensation:
a cool dress.
5.
not excited; calm; composed; under control:
to remain cool in the face of disaster.
6.
not hasty; deliberate:
a cool and calculated action.
7.
lacking in interest or enthusiasm:
a cool reply to an invitation.
8.
lacking in warmth or cordiality:
a cool reception.
9.
calmly audacious or impudent:
a cool lie.
10.
aloof or unresponsive; indifferent:
He was cool to her passionate advances.
11.
unaffected by emotions; disinterested; dispassionate:
She made a cool appraisal of all the issues in the dispute.
12.
Informal. (of a number or sum) without exaggeration or qualification:
a cool million dollars.
13.
(of colors) with green, blue, or violet predominating.
14.
Slang.
  1. great; fine; excellent:
    a real cool comic.
  2. characterized by great facility; highly skilled or clever:
    cool maneuvers on the parallel bars.
  3. socially adept:
    It's not cool to arrive at a party too early.
  4. acceptable; satisfactory; okay:
    If you want to stay late, that's cool.
adverb
15.
Informal. coolly.
interjection
16.
Slang.
  1. (used to express acceptance):
    Okay, cool! I'll be there at 10:00.
  2. (used to express approval, admiration, etc.):
    He got the job? Cool!
noun
17.
something that is cool; a cool part, place, time, etc.:
in the cool of the evening.
18.
coolness.
19.
calmness; composure; poise:
an executive noted for maintaining her cool under pressure.
verb (used without object)
20.
to become cool (sometimes followed by down or off):
The soup cooled in five minutes. We cooled off in the mountain stream.
21.
to become less ardent, cordial, etc.; become moderate.
verb (used with object)
22.
to make cool; impart a sensation of coolness to.
23.
to lessen the ardor or intensity of; allay; calm; moderate:
Disappointment cooled his early zealousness.
Verb phrases
24.
cool down, to bring the body back to its normal physiological level after fast, vigorous exercise or activity by gradually slowing the pace of activity or by doing gentle exercises or stretches.
25.
cool off, Informal. to become calmer or more reasonable:
Wait until he cools off before you talk to him again.
26.
cool out, Slang. to calm or settle down; relax:
cooling out at the beach.
Idioms
27.
blow one's cool. blow2 (def 44).
28.
cool it, Slang. calm down; take it easy.
29.
cool one's heels. heel1 (def 26).
Origin
1000
before 1000; Middle English cole, Old English cōl; cognate with Middle Low German kōl, Old High German kuoli (German kuhl). See cold, chill
Related forms
coolingly, adverb
coolish, adjective
coolly, adverb
coolness, noun
overcool, adjective
overcoolly, adverb
overcoolness, noun
recool, verb
subcool, verb (used with object)
ultracool, adjective
uncooled, adjective
well-cooled, adjective
Synonyms
1. See cold. 5. collected, self-possessed, unruffled, placid, quiet. See calm. 7, 8. distant, apathetic, reserved, remote, lukewarm. 23. temper, abate.
Antonyms
1, 3, 4, 7, 8. warm.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cool off

cool

/kuːl/
adjective
1.
moderately cold: a cool day
2.
comfortably free of heat: a cool room
3.
producing a pleasant feeling of coldness: a cool shirt
4.
able to conceal emotion; calm: a cool head
5.
lacking in enthusiasm, affection, cordiality, etc: a cool welcome
6.
calmly audacious or impudent
7.
(informal) (esp of numbers, sums of money, etc) without exaggeration; actual: a cool ten thousand
8.
(of a colour) having violet, blue, or green predominating; cold
9.
(of jazz) characteristic of the late 1940s and early 1950s, economical and rhythmically relaxed
10.
(informal) sophisticated or elegant, esp in an unruffled way
11.
(informal) excellent; marvellous
adverb
12.
(not standard) in a cool manner; coolly
noun
13.
coolness: the cool of the evening
14.
(slang) calmness; composure (esp in the phrases keep or lose one's cool)
15.
(slang) unruffled elegance or sophistication
verb
16.
usually foll by down or off. to make or become cooler
17.
usually foll by down or off. to lessen the intensity of (anger or excitement) or (of anger or excitement) to become less intense; calm down
18.
(usually imperative) (slang) cool it, to calm down; take it easy
19.
cool one's heels, to wait or be kept waiting
See also cool out
Derived Forms
coolingly, adverb
coolingness, noun
coolish, adjective
coolly, adverb
coolness, noun
Word Origin
Old English cōl; related to Old Norse kōlna, Old High German kuoli; see cold, chill
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for cool off

cool

adj.

Old English col "not warm" (but usually not as severe as cold), also, of persons, "unperturbed, undemonstrative," from Proto-Germanic *koluz (cf. Middle Dutch coel, Dutch koel, Old High German kuoli, German kühl "cool," Old Norse kala "be cold"), from PIE root *gel- "cold, to freeze" (see cold (adj.)).

Applied since 1728 to large sums of money to give emphasis to amount. Meaning "calmly audacious" is from 1825. Slang use for "fashionable" is 1933, originally Black English; modern use as a general term of approval is from late 1940s, probably from bop talk and originally in reference to a style of jazz; said to have been popularized in jazz circles by tenor saxophonist Lester Young. Related: Coolly.

n.

c.1400, "coldness, coolness," from cool (adj.). Meaning "one's self-control, composure" (the thing you either keep or lose) is from 1966.

v.

Old English colian, "to lose warmth," also figuratively, "to lose ardor," from the root of cool (adj.). Meaning "to cause to lose warmth" is from late 14c. Related: Cooled; cooling.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for cool off

cool off

verb phrase
  1. To become calmer and less explosive; moderate: When he cooled off I spoke sweet reason (1860s+)
  2. To kill; cool: Somebody cools off Mr Justin Veezee

cool

adjective
  1. In control of one's feelings; stoic: Learn to be cool under fire (by early 1700s)
  2. Aloof and uninvolved; disengaged, as an expression of alienation; beat, hip: He's cool, don't give a shit for nothing (1940s+)
  3. : cool jazz/ a real cool passage
  4. Excellent; good: a cool shirt/ cool sermon (1940s+)
  5. Pleasant; desirable; copacetic: You enjoying it? Is everything cool? (1950s+)
  6. Not less than a certain amount: cleared a cool million
noun
  1. : He lost his cool and bolted like a rabbit (1960s+)
  2. : My guru drifted me to a total spiritual cool
  3. Jazz marked by soft tones, improvisation based on advanced chord extensions, and revision of certain classical jazz idioms (1940s+ Cool musicians)
verb
  1. To postpone; await developments in: Let's cool this whole business for a week or so (1950s+)
  2. To kill: Who knew what he wanted to make it look like when he cooled her (1920+)
Related Terms

blow one's cool, lose one's cool, play it cool, zero cool


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with cool off

cool off

.
see: cool down
.
Also, cool down or out. Calm down, become less ardent, angry, or agitated, as in We can't discuss it until you've cooled off. The verb cool alone has been used in this sense since approximately a.d. 1000; off and down were added in the late 1800s, and Davy Crockett's Almanac (1836) had: “Resting a while, just long enough to cool out a little.”
.
Also, cool out. Kill someone, as in They threatened to cool off his brother. [ ; first half of 1800s ]
Also see: cool out, def. 2.
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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