Idioms for cool

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


synonym study for cool

1. See cold. 5. See calm. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for cool down

See also cool out

Derived forms of cool

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

Idioms and Phrases with cool down (1 of 2)

cool down

Also, cool off.


Effect a lower temperature, especially of the body following vigorous exercise. For example, After a race the coach makes the entire team do stretches to cool down, or Let's take a dip to cool off. These phrases date from a.d. 1000 with reference to the weather or cooking (as in First let the eggs cool off). The first gained renewed currency with the exercise boom of the late 1900s.


See cool off, def. 2.

Idioms and Phrases with cool down (2 of 2)


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.