derisiveness

from The Collaborative International Dictionary of English v.0.48

Derisive \De*ri"sive\, a.
   Expressing, serving for, or characterized by, derision.
   "Derisive taunts." --Pope. -- {De*ri"sive*ly}, adv. --
   {De*ri"sive*ness}, n.
   [1913 Webster]