Source : Webster's Revised Unabridged Dictionary (1913)

Talebearing \Tale"bear`ing\, a.
   Telling tales officiously.

Talebearing \Tale"bear`ing\, n.
   The act of informing officiously; communication of sectrts,
   scandal, etc., maliciously.

Source : WordNet®

talebearing
     adj : prone to communicate confidential information [syn: {blabbermouthed},
            {leaky}, {talebearing(a)}, {tattling(a)}]