Source : Webster's Revised Unabridged Dictionary (1913)

Ascribable \As*crib"a*ble\, a.
   Capable of being ascribed; attributable.

Source : WordNet®

ascribable
     adj : (usually followed by `to') able to be assigned or credited
           to; "punctuation errors ascribable to careless
           proofreading"; "the cancellation of the concert was due
           to the rain"; "the oversight was not imputable to him";
           "decide to which of these motives such extraordinary
           scenes are referable"- Charles Dickens [syn: {ascribable(p)},
            {due to(p)}, {imputable(p)}, {referable(p)}]