Noiseless
Pronunciation : Noise"less
Part of Speech : a.
Definition : Defn: Making, or causing, no noise or bustle; without noise; silent; as, the noiseless foot of time. So noiseless would I live. Dryden. -- Noise"less*ly, adv. -- Noise"less*ness, n.
Source : Webster's Unabridged Dictionary, 1913