What does accountable mean?
The definition of accountable
Ac*count”a*ble, a.
1 Liable to be called on to render an account; answerable; as, every man is accountable to God for his conduct.
2 Capable of being accounted for; explicable. [R.] True religion . . . intelligible, rational, and accountable, — not a burden but a privilege. B. Whichcote.

— Amenable; responsible; liable; answerable.