incognizance

from WordNet (r) 3.0 (2006)

incognizance
    n 1: a lack of knowledge or recognition [ant: {awareness},
         {cognisance}, {cognizance}, {consciousness}, {knowingness}]

from The Collaborative International Dictionary of English v.0.48

Incognizance \In*cog"ni*zance\, n.
   Failure to cognize, apprehended, or notice.
   [1913 Webster]

         This incognizance may be explained.      --Sir W.
                                                  Hamilton.
   [1913 Webster]

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