calm

(noun) steadiness of mind under stress. Synonyms: composure, calmness, equanimity. Examples: "He accepted their problems with composure and she with equanimity."

(noun) wind moving at less than 1 knot; 0 on the Beaufort scale. Synonyms: calm air.

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

(verb) make steady. Synonyms: steady, becalm. Examples: "Steady yourself."

(verb) become quiet or calm, especially after a state of agitation. Synonyms: 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) cause to be calm or quiet as by administering a sedative to. Synonyms: sedate, tranquilize, tranquillize, tranquillise. Examples: "The patient must be sedated before the operation."

(adj) not agitated; without losing self-possession. Synonyms: unagitated, serene, tranquil. Examples: "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."

(adj) (of weather) free from storm or wind. Synonyms: calm (vs. stormy). Examples: "Calm seas."