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

stillness \still"ness\, n.
   1. the quality or state of being still; quietness; silence;
      calmness; inactivity.
      1913 webster

            painting, then, was the art demanded by the modern
            intellect upon its emergence from the stillness of
            the middle ages.                      --j. a.
                                                  symonds.
      1913 webster

   2. habitual silence or quiet; taciturnity.
      1913 webster

            the gravity and stillness of your youth
            the world hath noted.                 --shak.
      1913 webster

[2] : WordNet (r) 2.0

stillness
     n 1: poetic tranquil silence; "the still of the night" syn: hush,
           still
     2: calmness without winds syn: windlessness
     3: a state of no motion or movement syn: motionlessness
        ant: motion
see also:
hush still windlessness motionlessness motion 

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

49 moby thesaurus words for "stillness":
   ataraxia, ataraxy, awful silence, calmness, composure,
   contemplation, dead, dead of night, deathlike silence,
   golden silence, hush, hush of night, imperturbability,
   inaudibility, lucid stillness, lull, marmoreal repose, mum,
   nirvana, noiselessness, peace, peacefulness, placidity, placidness,
   quiescence, quiescency, quiet, quietism, quietness, quietude,
   repose, rest, restfulness, satori, serenity, silence, silentness,
   silken repose, sleep, slumber, solemn silence, soundlessness,
   still, tacitness, taciturnity, tomblike silence, tranquillity,
   whisht, wise passiveness

Stillness >> S Words
Stillness, definition of term: Stillness
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