calm

> calm
(verb)
allay, becalm, compose, hush, lull, smooth, still, tranquillize.
alleviate, appease, assuage, moderate, mollify, pacify, quiet, soften, soothe, tranquillize.

> calm
(adjective)
halcyon, mild, peaceful, placid, quiet, reposeful, serene, smooth, still, tranquil, unruffled.
collected, cool, composed, controlled, impassive, imperturbable, sedate, self-possessed, undisturbed, unperturbed, unruffled, untroubled.

> calm
(noun)
lull.
equanimity, peace, placidity, quiet, repose, serenity, stillness, tranquillity.