See simmer in Webster's New World Roget's A-Z Thesaurus II
verb
To cook (food) in liquid heated to the point of steaming:
boil, parboil, stew. See ingestionTo be in a state of emotional or mental turmoil:
boil, bubble, burn, churn, ferment, seethe, smolder. See calm
phrasal verb simmer downTo bring one's emotions under control:
collect1, compose, contain, control, cool. Idiom: cool it. See restraint
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