calm down

(verb) become quiet or calm, especially after a state of agitation. Synonyms: calm, calm down, cool off, chill out, simmer down, settle down, cool it. Examples: "After the fight both men need to cool off.." "It took a while after the baby was born for things to settle down again.."

(verb) make calm or still. Synonyms: calm, calm down, quiet, tranquilize, tranquillize, tranquillise, quieten, lull, still. Example: "Quiet the dragons of worry and fear."

(verb) become quiet or less intensive. Synonyms: lull, calm down. Example: "The fighting lulled for a moment."