Idioms

    blow one's cool. blow2(def 44).
    cool it, Slang. calm down; take it easy.
    cool one's heels. heel1(def 26).

Origin of cool

before 1000; Middle English cole, Old English cōl; cognate with Middle Low German kōl, Old High German kuoli (German kuhl). See cold, chill
Related formscool·ing·ly, adverbcool·ish, adjectivecool·ly, adverbcool·ness, nouno·ver·cool, adjectiveo·ver·cool·ly, adverbo·ver·cool·ness, nounre·cool, verbsub·cool, verb (used with object)ul·tra·cool, adjectiveun·cooled, adjectivewell-cooled, adjective

Synonyms for cool

Synonym study

1. See cold. 5. See calm.

Antonyms for cool

1, 3, 4, 7, 8. warm.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


Examples from the Web for cool

Contemporary Examples of cool

Historical Examples of cool


British Dictionary definitions for cool

cool

adjective

moderately colda cool day
comfortably free of heata cool room
producing a pleasant feeling of coldnessa cool shirt
able to conceal emotion; calma cool head
lacking in enthusiasm, affection, cordiality, etca cool welcome
calmly audacious or impudent
informal (esp of numbers, sums of money, etc) without exaggeration; actuala cool ten thousand
(of a colour) having violet, blue, or green predominating; cold
(of jazz) characteristic of the late 1940s and early 1950s, economical and rhythmically relaxed
informal sophisticated or elegant, esp in an unruffled way
informal excellent; marvellous

adverb

not standard in a cool manner; coolly

noun

coolnessthe cool of the evening
slang calmness; composure (esp in the phrases keep or lose one's cool)
slang unruffled elegance or sophistication

verb

(usually foll by down or off) to make or become cooler
(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
cool it (usually imperative) slang to calm down; take it easy
cool one's heels to wait or be kept waiting
See also cool out
Derived Formscoolingly, adverbcoolingness, nouncoolish, adjectivecoolly, adverbcoolness, noun

Word Origin for cool

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

Word Origin and History for 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

Idioms and Phrases with cool

cool

In addition to the idioms beginning with cool

  • cool as a cucumber
  • cool down
  • cool it
  • cool off
  • cool one's heels
  • cool out

also see:

  • keep cool
  • keep one's cool
  • play it cool
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.