Quick definitions from WordNet (quiet)

▸ noun:  a disposition free from stress or emotion
▸ noun:  the absence of sound ("The street was quiet")
▸ noun:  an untroubled state; free from disturbances
▸ noun:  a period of calm weather
▸ verb:  become quiet or quieter
▸ verb:  make calm or still ("Quiet the dragons of worry and fear")
▸ adjective:  not showy or obtrusive ("Clothes in quiet good taste")
▸ adjective:  free of noise or uproar; or making little if any sound ("A quiet audience at the concert")
▸ adjective:  characterized by an absence or near absence of agitation or activity ("A quiet life")
▸ adjective:  of the sun; characterized by a low level of surface phenomena like sun spots e.g.
▸ adjective:  free from disturbance ("The quiet waters of a lagoon")
▸ adjective:  without untoward incident or disruption ("Quiet times")
▸ adjective:  in a softened tone ("A quiet reprimand")
▸ adverb:  with little or no activity or no agitation (`quiet' is a nonstandard variant for `quietly') ("Her hands rested quietly in her lap")
▸ name:  A surname (very rare: popularity rank in the U.S.: #42425)

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▸ Also see quiet