Search Result for "noiselessness": 
Wordnet 3.0

NOUN (1)

1. the property of making no noise; 



The Collaborative International Dictionary of English v.0.48:

Noiseless \Noise"less\, a.
   Making, or causing, no noise or bustle; without noise;
   silent; as, the noiseless foot of time.
   [1913 Webster]

         So noiseless would I live.               --Dryden.
   [1913 Webster] -- Noise"less*ly, adv. -- Noise"less*ness,
   n.
   [1913 Webster]


WordNet (r) 3.0 (2006):

noiselessness
    n 1: the property of making no noise