See more synonyms for simmer on
verb (used without object)
  1. to cook or cook in a liquid at or just below the boiling point.
  2. to make a gentle murmuring sound, as liquids cooking just below the boiling point.
  3. to be in a state of subdued or restrained activity, development, excitement, anger, etc.: The town simmered with rumors.
verb (used with object)
  1. to keep (liquid) in a state approaching boiling.
  2. to cook in a liquid that is kept at or just below the boiling point.
  1. the state or process of simmering.
Verb Phrases
  1. simmer down,
    1. to reduce in volume by simmering.
    2. become calm or quiet, as from a state of anger or turmoil: We waited for the audience to simmer down.

Origin of simmer

First recorded in 1645–55; alteration of earlier simper < ?
Related formssim·mer·ing·ly, adverbre·sim·mer, verbun·sim·mered, adjectiveun·sim·mer·ing, adjective

Synonym study

3. See boil1. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for simmer down

simmer down

verb (adverb)
  1. (intr) informal to grow calmer or quieter, as after intense rage or excitement
  2. (tr) to reduce the volume of (a liquid) by boiling slowly


  1. to cook (food) gently at or just below the boiling point
  2. (intr) to be about to break out in rage or excitement
  1. the act, sound, or state of simmering

Word Origin for simmer

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

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

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 Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.