RATIONAL definition: agreeable to reason; reasonable; sensible. See examples of rational used in a sentence.

The meaning of RATIONAL is having reason or understanding. How to use rational in a sentence.

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RATIONAL definition: 1. based on clear thought and reason: 2. (of a number) that can be expressed as the ratio of two…. Learn more.

Define rational. rational synonyms, rational pronunciation, rational translation, English dictionary definition of rational. adj. 1. Having or exercising the ability to reason.

Rational decisions and thoughts are based on reason rather than on emotion. He's asking you to look at both sides of the case and come to a rational decision.

Jan 20, 2026 · Logically sound; not self-contradictory or otherwise absurd. His statements were quite rational.