Adjective
1. having or concerned with polarities or contrasts;
"a Janus-faced view of history""a Janus-faced policy"2. 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.Thackeray3. having two faces--one looking to the future and one to the past;
"Janus the two-faced god"