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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.


rationale British  
/ ˌræʃəˈnɑːl /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of rationale

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

Explanation

The rationale for something is the basic or underlying reason or explanation for it. This noun (pronounced "rash-uh-NAL") is usually used in the singular: What was the rationale behind his decision to quit? The related adjective rational means "based on facts or reason" or "having the ability to think clearly." An example of a rational rationale? You add extra baking soda to pancake batter under the rationale that if you want them to be fluffier, you need more rising agent. Rationale is from Latin, from rationalis "relating to reason," from ratio "calculation, reason," from rērī "to consider, think."

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Vocabulary lists containing rationale

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Rationale: Following a poor drive into the trees, punch the ball back into the fairway.

From Golf Digest • Apr. 21, 2017

Rationale: What better gift than sharing the sport you hold so dear?

From Golf Digest • Apr. 21, 2017

Document: The Legal Rationale for Surveillance The Obama administration on Friday released documents related to the legal basis for surveillance efforts.

From New York Times • Aug. 9, 2013

Rationale: Beavers, now 14th-ranked, are the only unbeaten besides Oregon in the conference.

From Seattle Times • Oct. 1, 2012

He was the author of a "Rationale upon the Book of Common Prayer," 1657.

From Bell's Cathedrals: The Cathedral Church of Norwich A Description of Its Fabric and A Brief History of the Episcopal See by Quennell, C. H. B. (Charles Henry Bourne)

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