Source : Webster's Revised Unabridged Dictionary (1913)

Accountability \Ac*count`a*bil"i*ty\, n.
   The state of being accountable; liability to be called on to
   render an account; accountableness. ``The awful idea of
   accountability.'' --R. Hall.

Source : WordNet®

accountability
     n : responsibility to someone or for some activity [syn: {answerability},
          {answerableness}]