DICT.TW Dictionary Taiwan

 rad·i·cal·ism /ˈrædɪkəˌlɪzəm/
 激進主義

 Rad·i·cal·ism n.  The quality or state of being radical; specifically, the doctrines or principles of radicals in politics or social reform.
    Radicalism means root work; the uprooting of all falsehoods and abuses.   --F. W. Robertson.
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 radicalism
      n : the political orientation of those who favor revolutionary
          change in government and society