two-faced adj 1: 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}] 2: having two faces--one looking to the future and one to the past; "Janus the two-faced god" [syn: {Janus-faced}, {two- faced}]