[1] : The Collaborative International Dictionary of English v.0.48

quietly \qui"etly\, adv.
   1. in a quiet state or manner; without motion; in a state of
      rest; as, to lie or sit quietly.
      1913 webster

   2. without tumult, alarm, dispute, or disturbance; peaceably;
      as, to live quietly; to sleep quietly.
      1913 webster

   3. calmly, without agitation or violent emotion; patiently;
      as, to submit quietly to unavoidable evils.
      1913 webster

   4. noiselessly; silently; without remark or violent movement;
      in a manner to attract little or no observation; as, he
      quietly left the room.
      1913 webster

[2] : WordNet (r) 2.0

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
see also:
softly loudly noisily quiet unquietly restfully 

[3] : Moby Thesaurus II by Grady Ward, 1.0

61 moby thesaurus words for "quietly":
   aesthetically, artistically, becomingly, calmly, composedly,
   coolly, decently, decorously, demurely, dispassionately, elegantly,
   genteelly, gently, gracefully, humbly, impassively, imperturbably,
   in good taste, in silence, inaudibly, inexcitably, inirritably,
   levelheadedly, like a lamb, meekly, mildly, modestly, noiselessly,
   pacifically, peaceably, peacefully, placidly, properly,
   quiescently, sedately, seemly, serenely, silently, simply,
   smoothly, softly, soundlessly, steadily, still, stilly, stodgily,
   stoically, stolidly, stuffily, tamely, tastefully, tranquilly,
   unassumingly, unobtrusively, unostentatiously, unperturbedly,
   unpresumptuously, unpretendingly, unpretentiously, with taste,
   without ceremony

Quietly >> Q Words
Quietly, definition of term: Quietly
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