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[sim-er] /ˈsɪm ər/
verb (used without object)
to cook or cook in a liquid at or just below the boiling point.
to make a gentle murmuring sound, as liquids cooking just below the boiling point.
to be in a state of subdued or restrained activity, development, excitement, anger, etc.:
The town simmered with rumors.
verb (used with object)
to keep (liquid) in a state approaching boiling.
to cook in a liquid that is kept at or just below the boiling point.
the state or process of simmering.
Verb phrases
simmer down,
  1. to reduce in volume by simmering.
  2. Slang. to become calm or quiet, as from a state of anger or turmoil:
    We waited for the audience to simmer down.
Origin of simmer
1645-55; alteration of earlier simper < ?
Related forms
simmeringly, adverb
resimmer, verb
unsimmered, adjective
unsimmering, adjective
3. See boil1 . Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for simmer down
Historical Examples
  • He tried his best to simmer down and go to sleep, but every few minutes hed boil over again.

    Friar Tuck Robert Alexander Wason
  • "simmer down," he said, as he seated himself at the head of the table.

    The Lani People J. F. Bone
  • It'll simmer down and work out, I expect, to a bad quarrel you had with Karen that's parted you.

    Tante Anne Douglas Sedgwick
  • Kieran, on a camp-stool, waited for the laughter to simmer down.

    Wide Courses James Brendan Connolly
  • It took him a lifetime to simmer down his business to just yes and no.

    The Making of Bobby Burnit George Randolph Chester
  • Then with these before you, you can soon, by stating them and rearranging them, simmer down your case into arguable form.

    The Making of Arguments J. H. Gardiner
  • Miss Phillips was too wise to call a Scout meeting immediately; she wanted to give the discussion a chance to simmer down.

  • He stomped over and helped himself to some soup and waited for his anger to simmer down.

    The Ethical Engineer Henry Maxwell Dempsey
  • Well, we'll simmer down when the turn comes, and though I'm piling up dollars, I'll be thankful.

    Winston of the Prairie Harold Bindloss
  • With that some several policemen run up, and I had to simmer down.

British Dictionary definitions for simmer down

simmer down

verb (adverb)
(intransitive) (informal) to grow calmer or quieter, as after intense rage or excitement
(transitive) to reduce the volume of (a liquid) by boiling slowly


to cook (food) gently at or just below the boiling point
(intransitive) to be about to break out in rage or excitement
the act, sound, or state of simmering
Word Origin
C17: perhaps of imitative origin; compare German summen to hum
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 simmer down



1650s, alteration of simperen "to simmer" (late 15c.), possibly imitative; not thought to be connected to simper (v.). OED says the change is "probably due to a feeling of phonetic appropriateness." Figurative sense, of feelings, "to be agitated" is from 1764. Opposite sense, in simmer down, first recorded 1871, probably from the notion of moving from a full boil to a mere simmer.

I must and will keep shady and quiet till Bret Harte simmers down a little. [Mark Twain, letter, 1871]
Related: Simmered; simmering. The noun meaning "a condition of simmering" is from 1809.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for simmer down



Money: silver under the mattress

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 simmer down

simmer down

Become calm after anger or excitement, as in Simmer down, Mary; I'm sure he'll make it up to you, or I haven't time to look at your report now, but I will when things have simmered down a bit. This idiom derives from simmer in the sense of “cook at low heat, below the boiling point.” [ Second half of 1800s ]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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