The Collaborative International Dictionary of English v.0.48:

Inculpate \In*cul"pate\, v. t. [imp. & p. p. Inculpated; p.
   pr. & vb. n. Inculpating.] [LL. inculpatus, p. p. of
   inculpare to blame; pref. in- in + culpa fault. See
   Culpable.]

   Note: [A word of recent introduction.]
   To blame; to impute guilt to; to accuse; to involve or
   implicate in guilt. Contrasted with exculpate.
   [1913 Webster]

         That risk could only exculpate her and not inculpate
         them -- the probabilities protected them so perfectly.
                                                  --H. James.
   [1913 Webster]

WordNet (r) 3.0 (2006):

inculpate
    v 1: suggest that someone is guilty [syn: incriminate,
         imply, inculpate]