un·chris·tian /-ˈkrɪsʧən, ˈkrɪʃ-/
  (a.)異教的;未開發的
  Un·chris·tian, v. t.  To make unchristian. [Obs.]
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  Un·chris·tian a.
  1. Not Christian; not converted to the Christian faith; infidel.
  2. Contrary to Christianity; not like or becoming a Christian; as, unchristian conduct.
  unchristian
       adj : not of a Christian faith [ant: christian]