rationale

American  

[rash-uh-nal] / ˌræʃ əˈnæl /

noun

1. the fundamental reason or reasons serving to account for something.

   Synonyms:

   ground, basis, logic

2. a statement of reasons.

3. a reasoned exposition of principles.

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rationale British  

/ ˌræʃəˈnɑːl /

noun

1. a reasoned exposition, esp one defining the fundamental reasons for a course of action, belief, etc

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Etymology

Origin of rationale

First recorded in 1650–60; from Latin: neuter of ratiōnālis rational

Example Sentences

For the Tanglewood strategist, though, most of the planks in the investment rationale remain intact.

From MarketWatch • Mar. 27, 2026

Mr. Crowley provides an insightful and reasonably accurate portrayal of Donald Trump’s political rationale.

From The Wall Street Journal • Mar. 25, 2026

It echoed the rationale for toppling the monarchy in Hawaii and the agreement with Russia that gave us Alaska.

From Los Angeles Times • Mar. 21, 2026

The rationale is to spark a rapid increase in female representation in coaching roles.

From BBC • Mar. 20, 2026

She hesitated, conscious that in answering she would be offering a form of defense, a rationale, and that it might enrage him further.

From "Atonement" by Ian McEwan

Related Words

• excuse
• explanation
• hypothesis
• justification
• motivation
• motive
• philosophy
• principle
• rationalization
• reason
• theory