Double dealing \Dou"ble deal"ing\, double-dealing
\dou"ble-deal"ing\
   False or deceitful dealing; acting in bad faith; deception by
   pretending to entertain one set of intentions while acting
   under the influence of another. See {Double dealing}, under
   {Dealing}. --Shak.

   Syn: duplicity.
        [1913 Webster + WordNet 1.5]

double-dealing \double-dealing\ adj.
   1. given to deception especially by pretending one set of
      feelings and acting under the influence of another; as,
      they accused each other of double-dealing behavior.

   Syn: ambidextrous, deceitful, duplicitous, two-faced.
        [WordNet 1.5 +PJC]