Source : Webster's Revised Unabridged Dictionary (1913)

Deceivableness \De*ceiv"a*ble*ness\, n.
   1. Capability of deceiving.

            With all deceivableness of unrighteousness. --2
                                                  Thess. ii. 10.

   2. Liability to be deceived or misled; as, the deceivableness
      of a child.