Rational

Definition

Rational pertains to the capacity for logical, analytical thought, or the quality of being based on clear reasoning or facts.

Parts of Speech

• Adjective
• Noun

Pronunciation

American English

• IPA Pronunciation: /ˈræʃənəl/
• Respelling: RASH-uh-nuhl (with "RASH" as in "rash," "uh" as a neutral sound, and "nuhl" as in "funnel")

British English

• IPA Pronunciation: /ˈræʃənəl/
• Respelling: RASH-uh-nuhl (similar to American English, with "RASH" as in "rash," "uh" as a neutral sound, and "nuhl" as in "funnel")

In both dialects, "rational" is pronounced with the stress on the first syllable, "RASH." The pronunciation is consistent across both American and British English, clearly articulating each component of the word with emphasis on the "RASH" syllable.

Etymology

The word "rational" derives from the Latin word rationalis, which relates to reason or logic. It stems from ratio, meaning "reason" or "calculation."

Derivatives

• Rationalize
• Rationalism
• Rationality
• Rationalist
• Rationally

Synonyms

• Logical
• Reasonable
• Sensible

Antonyms

• Irrational
• Illogical
• Unreasonable

Usage

"Rational" is frequently used in both philosophical contexts, relating to reasoning or logical thought, and everyday scenarios, indicating actions or decisions made based on clear reasoning.

Related Terms

• Rational number
• Rational function
• Rational agent
• Rational choice theory
• Rational expectation

Detailed Definition

Adjective

• Based on or in accordance with logic or reason.
• Example: It's not rational to expect children to understand complex scientific theories.

• Capable of clear, sound reasoning.
• Example: Humans are considered rational beings.

Noun

• A rational number, specifically one that can be expressed as a quotient of two integers.
• Example: The number 1/2 is a rational because it can be expressed as the quotient of two integers.