Adjective: duplicitous d(y)oo'pli-si-tus
- Marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another
"His duplicitous behaviour destroyed trust in the relationship";
- ambidextrous, deceitful, double-dealing, Janus-faced, two-faced, double-faced, double-tongued
See also: dishonest, dishonorable [US], dishonourable [Brit, Cdn]
Encyclopedia: Duplicitous