Source : Webster's Revised Unabridged Dictionary (1913)

Quietly \Qui"et*ly\, adv.
   1. In a quiet state or manner; without motion; in a state of
      rest; as, to lie or sit quietly.

   2. Without tumult, alarm, dispute, or disturbance; peaceably;
      as, to live quietly; to sleep quietly.

   3. Calmly, without agitation or violent emotion; patiently;
      as, to submit quietly to unavoidable evils.

   4. Noiselessly; silently; without remark or violent movement;
      in a manner to attract little or no observation; as, he
      quietly left the room.

Source : WordNet®

quietly
     adv 1: with low volume; "speak softly but carry a big stick"; "she
            spoke quietly to the child"; "the radio was playing
            softly" [syn: {softly}] [ant: {loudly}]
     2: with little or no sound; "the class was listening quietly
        and intently"; "she was crying quietly" [ant: {noisily}]
     3: with little or no activity or no agitation (`quiet' is a
        nonstandard variant for `quietly'); "her hands rested
        quietly in her lap"; "the rock star was quietly led out
        the back door"; "sit here as quiet as you can" [syn: {quiet}]
        [ant: {unquietly}]
     4: in a restful manner; "the streets are restfully sunny and
        still for the town is at mass" [syn: {restfully}]