Ob*liv"i*ous*ness

from The Collaborative International Dictionary of English v.0.48

Oblivious \Ob*liv"i*ous\, a. [L. obliviosus: cf. F. oblivieux.]
   [1913 Webster]
   1. Promoting oblivion; causing forgetfulness. "The oblivious
      pool." --Milton.
      [1913 Webster]

            She lay in deep, oblivious slumber.   --Longfellow.
      [1913 Webster]

   2. Evincing oblivion; forgetful.
      [1913 Webster]

            Through are both weak in body and oblivious.
                                                  --Latimer.
      [1913 Webster] -- {Obliv"i*ous*ly}, adv. --
      {Ob*liv"i*ous*ness}, n. --Foxe.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

obliviousness \ob*liv"i*ous*ness\ n.
   total forgetfulness.

   Syn: oblivion.
        [WordNet 1.5]