simmer down

from WordNet (r) 3.0 (2006)

simmer down
    v 1: become quiet or calm, especially after a state of
         agitation; "After the fight both men need to cool off.";
         "It took a while after the baby was born for things to
         settle down again." [syn: {calm}, {calm down}, {cool off},
         {chill out}, {simmer down}, {settle down}, {cool it}]

from Moby Thesaurus II by Grady Ward, 1.0

20 Moby Thesaurus words for "simmer down":
      calm down, collect, collect oneself, compose oneself, control,
      cool, cool it, cool off, get organized, quiet down, rein, relax,
      repress, restrain, smother, sober down, subside, suppress,
      take it easy, unwind

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