'two-faced' definitions:

Marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another; "she was a deceitful scheming little thing"- Israel Zangwill; "a double-dealing double agent"; "a double-faced infernal traitor and schemer"- W.M.Thackeray [syn: ambidextrous, deceitful, double- dealing, duplicitous, Janus-faced, two-faced, double-faced, double-tongued]

Having two faces--one looking to the future and one to the past; "Janus the two-faced god" [syn: Janus-faced, two- faced]