1.  calm down(v = verb.emotion) calm, chill out, cool it, cool off, settle down, simmer down - 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."
is one way to change state, turn
Sample sentences: Something ----s; Somebody ----s

2.  calm down(v = verb.emotion) calm, lull, quiet, quieten, still, tranquilize, tranquillise, tranquillize - make calm or still; "quiet the dragons of worry and fear"
is one way to comfort, console, solace, soothe
Sample sentences: The performance is likely to calm down Sue

3.  calm down(v = verb.change) lull - become quiet or less intensive; "the fighting lulled for a moment"
is one way to hush, hush up, quieten, shut up, silence, still
Sample sentences: Something ----s

VB  be composed, laisser faire, laisser aller, take things easily, take things as they come, take it easy, rub on, live and let live, take easily, take cooly, take in good part, aequam servare mentem, bear the brunt, bear well, go through, support, endure, brave, disregard, tolerate, suffer, stand, bide, abide, aby, bear with, put up with, take up with, abide with, acquiesce, submit, submit with a good grace, resign oneself to, reconcile oneself to, brook, digest, eat, swallow, pocket, stomach, make light of, make the best of, make 'a virtue of necessity', put a good face on, keep one's countenance, check, check oneself, compose, appease (moderate), propitiate, repress, render insensible, overcome one's excitability, allay one's excitability, repress one's excitability, master one's feelings, make oneself easy, make one's mind easy, set one's mind at ease, set one's mind at rest, calm down, cool down, gentle, thaw, grow cool, be borne, be endured, go down.

VB  be moderate, keep within bounds, keep within compass, sober down, settle down, keep the peace, remit, relent, take in sail, moderate, soften, mitigate, temper, accoy, attemper, contemper, mollify, lenify, dulcify, dull, take off the edge, blunt, obtund, sheathe, subdue, chasten, sober down, tone down, smooth down, weaken, lessen, check palliate, tranquilize, pacify, assuage, appease, swag, lull, soothe, compose, still, calm, calm down, cool, quiet, hush, quell, sober, pacify, tame, damp, lay, allay, rebate, slacken, smooth, alleviate, rock to sleep, deaden, smooth, throw cold water on, throw a wet blanket over, turn off, slake, curb, tame, smooth over, pour oil on the waves, pour oil on the troubled waters, pour balm into, mattre de l'eau dans son vin, go out like a lamb, roar you as gently as any sucking dove.

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