freethinker
noun [ C ] old-fashioned uk/ˌfriːˈθɪŋ.kər/ us/ˌfriːˈθɪŋ.kɚ/
（尤指宗教或政治上的）自由思想者
someone who forms their own opinions and beliefs, especially about religion or politics, rather than just accepting what is officially or commonly believed and taught