DICT.TW Dictionary Taiwan

 de·fec·tion /dɪˈfɛkʃən/
 背叛,脫黨,離會

 De·fec·tion n.  Act of abandoning a person or cause to which one is bound by allegiance or duty, or to which one has attached himself; desertion; failure in duty; a falling away; apostasy; backsliding. “Defection and falling away from God.”
    The general defection of the whole realm.   --Sir J. Davies.
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 defection
      n 1: withdrawing support or help despite allegiance or
           responsibility; "his abandonment of his wife and
           children left them penniless" [syn: desertion, abandonment]
      2: the state of having rejected your religious beliefs or your
         political party or a cause (often in favor of opposing
         beliefs or causes) [syn: apostasy, renunciation]