Incon*spic"u*ous*ness

from The Collaborative International Dictionary of English v.0.48

Inconspicuous \In`con*spic"u*ous\, a. [L. inconspicuus. See
   {In-} not, and {Conspicuous}.]
   Not conspicuous or noticeable; hardly discernible. --
   {In`con*spic"u*ous*ly}, adv. -- {In`con*spic"u*ous*ness}, n.
   --Boyle.
   [1913 Webster]