Un`ac*count"a*ble (?), a.
1.
Not accountable or responsible; free from control.
South.
2.
Not to be accounted for; inexplicable; not consonant with reason or rule; strange; mysterious.
-- Un`ac*count"a*ble*ness}, n. -- Un`ac*count"a*bly, adv.
© Webster 1913.