'calm down' definitions:

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]

Make calm or still; "quiet the dragons of worry and fear" [syn: calm, calm down, quiet, tranquilize, tranquillize, tranquillise, quieten, lull, still] [ant: agitate, charge, charge up, commove, excite, rouse, turn on]

Become quiet or less intensive; "the fighting lulled for a moment" [syn: lull, calm down]