The Collaborative International Dictionary of English v.0.48:
Answerableness \An"swer*a*ble*ness\, n. The quality of being answerable, liable, responsible, or correspondent. [1913 Webster]WordNet (r) 3.0 (2006):
answerableness n 1: responsibility to someone or for some activity [syn: accountability, answerability, answerableness]