free·think·er /-ˈθɪŋkɚ/
  自由思想家
  Free·think·er n. One who speculates or forms opinions independently of the authority of others; esp., in the sphere or religion, one who forms opinions independently of the authority of revelation or of the church; an unbeliever; -- a term assumed by deists and skeptics in the eighteenth century.
     Atheist is an old-fashioned word: I'm a freethinker, child.   --Addison.
  Syn: -- Infidel; skeptic; unbeliever. See Infidel.
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  freethinker
       n : a person who believes that God created the universe and then
           abandoned it [syn: deist]