- (v.i.) To use, and rely on, reason in forming a theory, belief, etc., especially in matters of religion: to accord with the principles of rationalism.
- (v.t.) To interpret in the manner of a rationalist.
- (v.t.) To form a rational conception of.
- (v.t.) To make rational; also, to convert to rationalism.
- (v.t.) To render rational; to free from radical signs or quantities.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). rationalize. Retrieved September 20, 2026, from http://smartdefine.org/rationalize/definitions/2052754 |
| Chicago | Webster's. 2011. "rationalize" http://smartdefine.org/rationalize/definitions/2052754 (accessed September 20, 2026). |
| Harvard | Webster's 2011, rationalize, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/rationalize/definitions/2052754>. |
| MLA | Webster's. "rationalize" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/rationalize/definitions/2052754> |