silvernessn.
Etymology: < silver n. and adj. + -ness suffix.Previous versions of the OED give the stress as: ˈsilverness.
1862 F. Hall tr. N. N. Gore 168 Instead of perceiving nacreness, he transfers the silverness..to the nacre lying in his sight.
This entry has not yet been fully updated (first published 1910; most recently modified version published online March 2022).