thinker [ˈθɪŋkə(r)]

以下由轻松背单词网站提供

n.思想家，思考者

someone who considers important subjects or produces new ideas

There lived in Greece a great thinker named Aristotle. 希腊有一个名叫亚里斯多德的伟大思想家。
He is a loose thinker. 他是个思维不严密的人。