rationalist Meaning, Definition & Usage
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noun someone who emphasizes observable facts and excludes metaphysical speculation about origins or ultimate causes
positivist.
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adjective of or relating to or characteristic of rationalism
- rationalist philosophy
WordNet
Ra"tion*al*ist noun
Etymology
Cf. F.Definitions
One who accepts rationalism as a theory or system; also, disparagingly, a false reasoner. See Citation under Reasonist .