WordNet sense 1 (equally skillful with each hand):

two-handed

WordNet sense 2 (marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another):

deceitful, double-dealing, duplicitous, two-faced, double-faced, double-tongued, Janus-faced

WordNet sense 3 (deceptive or fraudulent; disposed to cheat or defraud or deceive):

dishonest, dishonorable