noun a period of calm weather
Synonymslull
noun an untroubled state; free from disturbances
noun the absence of sound
Synonymssilence
noun a disposition free from stress or emotion
verb become quiet or quieter
verb make calm or still
adjective characterized by an absence or near absence of agitation or activity
Oppositesunquiet
adjective free of noise or uproar; or making little if any sound
Oppositesnoisy
adjective (of a body of water) free from disturbance by heavy waves
Similarcalm
adjective (of the sun) characterized by a low level of surface phenomena, such as sunspots
Oppositesactive
adverb with little or no activity or no agitation (`quiet' is a nonstandard variant for `quietly')
Synonymsquietly
Source: WordNet 3.1, Princeton University