Inob*tru"sive*ness

from The Collaborative International Dictionary of English v.0.48

Inobtrusive \In`ob*tru"sive\, a.
   Not obtrusive; unobtrusive. -- {In`ob*tru"sive*ly}, adv. --
   {In`ob*tru"sive*ness}, n.
   [1913 Webster]