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Rational

Definitions and Meaning in English

1. As an adjective: Based on reason or logic rather than emotions or irrational thoughts.
2. As a mathematical term: A number that can be expressed as the quotient of two integers (e.g., 3/4).

History and Origin

The word “rational” originates from the Latin term rationalis, meaning “reasonable or logical,” derived from ratio (reason or calculation). It entered the English language in the late Middle Ages, initially emphasizing logical reasoning and the use of intellect in decision-making.

Detailed Explanation

“Rational” refers to the ability or tendency to think and act based on logic, facts, and reasoned judgment, rather than emotions or impulses. It is often used to describe behavior, decisions, or arguments that are well-thought-out and coherent. In mathematics, “rational” refers to numbers that can be expressed as fractions or ratios of integers, distinguishing them from irrational numbers like √2 or π, which cannot be expressed in this way.

Example Sentences

1. Making a rational decision requires careful analysis of all the facts.
2. Her explanation was clear and entirely rational.
3. It’s not rational to fear something that poses no real danger.
4. The teacher encouraged the students to approach problems in a rational way.
5. He always strives to remain rational, even in stressful situations.
6. In mathematics, a rational number can be expressed as a fraction.
7. The discussion was rational and free from emotional outbursts.
8. Choosing a rational approach often leads to better outcomes.
9. The policy is based on rational principles rather than political motives.

Synonyms with Short Explanation

1. Logical: Based on clear reasoning or sound principles.
2. Reasonable: Fair and sensible, grounded in logic.
3. Analytical: Relating to systematic examination or reasoning.
4. Sensible: Acting with practicality and logic.
5. Intellectual: Involving the use of reasoning and intellect.

Related Words with Short Explanation

1. Reasoning: The process of thinking logically and drawing conclusions.
2. Judicious: Showing good judgment or reason.
3. Thoughtful: Considering facts and reasoning carefully before acting.
4. Pragmatic: Practical and logical in approach.
5. Cognitive: Related to mental processes of reasoning and understanding.

More Matches with Short Explanation

1. Rationality: The quality of being logical and reasonable.
2. Objectivity: Judgment based on facts rather than emotions.
3. Rationalism: A belief in reason as the primary source of knowledge.
4. Reason: The ability to think and form judgments logically.
5. Rationale: The reasoning or logic behind a decision or idea.

Antonyms

1. Irrational
2. Illogical
3. Emotional
4. Absurd
5. Unreasonable