dis·loy·al /(ˌ)dɪsˈlɔɪ(ə)l/
  (a.)不實的,不義的,不忠的
  Dis·loy·al a.  Not loyal; not true to a sovereign or lawful superior, or to the government under which one lives; false where allegiance is due; faithless; as, a subject disloyal to the king; a husband disloyal to his wife.
     Without a thought disloyal.   --Mrs. Browning.
  Syn: -- Disobedient; faithless; untrue; treacherous; perfidious; dishonest; inconstant; disaffected.
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  disloyal
       adj 1: showing lack of love for your country [syn: unpatriotic]
              [ant: patriotic]
       2: deserting your allegiance or duty to leader or cause or
          principle; "disloyal aides revealed his indiscretions to
          the papers" [ant: loyal]