rationalist

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun someone who emphasizes observable facts and excludes metaphysical speculation about origins or ultimate causes
adjective of or relating to or characteristic of rationalism

From Middle French rationaliste; rational + -ist.

Here, however, the two rationalists get into a deadlock. — The Beginnings of Poetry, Francis Barton Gummere
Descartes and Spinoza are "rationalists" both in their method and results. — Leibniz's New Essays Concerning the Human Understanding: A Critical Exposition, John Dewey
In this, therefore, which was the most important point of the controversy, the rationalists were in the right. — The Problems of Philosophy, Bertrand Russell

positivist

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