Source : Webster's Revised Unabridged Dictionary (1913)

Culpability \Cul`pa*bil"i*ty\ (k?l`p?-b?l`?-t?), n.; pl.
   {Culpabilities} (-t?z). [Cf. F. culpabilit['e].]
   The state of being culpable.

Source : WordNet®

culpability
     n : a state of guilt [syn: {blameworthiness}, {culpableness}]