double-faced

Adjective

double-faced (not comparable)

1. Having two functional faces.
   • a double-faced hammer

   Synonyms:

   two-faced

2. Deceitful; hypocritical; treacherous.
   • Fame , if not double-faced , is double-mouthed ,
     And with contrary blast proclaims most deed1671, John Milton, “Samson Agonistes, […]”, in Paradise Regain’d. A Poem. In IV Books. To which is Added, Samson Agonistes, London: […] J[ohn] M[acock] for John Starkey […], →OCLC
   • A deep-seated misgiving about U.S. Asian policy is spreading among anti-Communists in Southeast Asia, who fear that the Korean truce is the first sign of U.S. withdrawal. In Hong Kong, anti-Communist Chinese newspapers, even those critical of Chiang, now talk about “U.S. double-faced diplomacy.”...1953 December 7, “ASIA: The Two Anti-Communists”, in TIME

   Synonyms:

   double-hearted, Janus-faced, two-faced, beguiling, deceitful, deceptious, deceptive, deceptory, fallacious, fraudful