lib·er·tin·ism /ˈlɪbɚ/
  放蕩,玩樂,自由思想
  Lib·er·tin·ism n.
  1. The state of a libertine or freedman. [R.]
  2. Licentious conduct; debauchery; lewdness.
  3. Licentiousness of principle or opinion.
     That spirit of religion and seriousness vanished all at once, and a spirit of liberty and libertinism, of infidelity and profaneness, started up in the room of it.   --Atterbury.
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