Janus-faced /-ˌfest/
 (a.)有兩副面孔的,懷二心的,口是心非的


 Ja·nus-faced a. Double-faced; deceitful.
 Janus-faced lock, one having duplicate faces so as to go upon a right or a left hand door, the key entering on either side indifferently.

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 Janus-faced
      adj 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.Thackeray
         [syn: ambidextrous, deceitful, double-dealing, duplicitous,
          two-faced, double-faced, double-tongued]
      3: having two faces--one looking to the future and one to the
         past; "Janus the two-faced god" [syn: two-faced]