noiselessness
nounEtymology From noiseless + -ness.
1
The quality or state of being noiseless; quiet or hush; silence.
- She had established a character for humility, discretion, noiselessness and religion which Mrs. Piper greatly regretted losing.1930, Norman Lindsay, Redheap, Sydney, N.S.W.: Ure Smith, →OCLC, page 193: