not agitated; without losing self-possession; "spoke in a calm voice"; "remained calm throughout the uproar"; "he remained serene in the midst of turbulence"; "a serene expression on her face"; "she became more tranquil"; "tranquil life in the country"
steadiness of mind under stress; "he accepted their problems with composure and she with equanimity"
wind moving at less than 1 knot; 0 on the Beaufort scale
cause to be calm or quiet as by administering a sedative to; "The patient must be sedated before the operation"
make steady; "steady yourself"
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."