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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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reason why

Grammar usage guide and real-world examples

USAGE SUMMARY

"reason why" is a correct and usable phrase in written English.
It is used to explain the basis for a certain opinion or thought. For example, "The reason why I love this movie is the underlying theme of family."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

Any reason why?

News & Media

The New Yorker

The reason why is uncertain.

News & Media

The New York Times

There's no reason why not".

News & Media

Independent

"There's no reason why.

Here's one reason why.

And the reason why?

"That is the reason why.

Absolutely no reason why not.

The reason why may surprise you.

News & Media

The Economist

Yours is not to reason why.

News & Media

The New Yorker

And neuroscientists know the reason why.

News & Media

Independent
Show more...

Expert writing Tips

Best practice

When using "reason why", ensure it's followed by a complete clause to clearly articulate the explanation. Avoid redundancy by not repeating the word "reason" unnecessarily (e.g., avoid "the reason why is because").

Common error

Avoid using phrases like "the reason why is because" as it's repetitive. Instead, choose either "the reason is" or "why" followed by your explanation to maintain conciseness.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "reason why" functions as a causal connector, introducing an explanation or justification. It sets the stage for clarifying the basis or motive behind a particular situation or event. Ludwig AI confirms that this phrase is widely recognized and accepted in English.

Expression frequency: Very common

Frequent in

News & Media

65%

Science

15%

Wiki

10%

Less common in

Formal & Business

5%

Encyclopedias

3%

Reference

2%

Ludwig's WRAP-UP

In summary, the phrase "reason why" serves as a causal connector used to introduce an explanation or justification. Ludwig AI identifies it as grammatically correct and very commonly used. While versatile, it's best to avoid redundancy such as "the reason why is because". Alternatives like "cause for" or "explanation for" can provide similar meanings with slight variations. Its frequent appearance in News & Media sources and widespread acceptance highlight its utility in providing clarity and understanding across various contexts. Remember to follow best practices and conciseness, as its clarity may depend on your attention to wording.

FAQs

How can I use "reason why" in a sentence?

Use "reason why" to introduce an explanation or cause. For example, "The "reason why" she succeeded was her determination".

What are some alternatives to "reason why"?

You can use alternatives such as "cause for", "explanation for", or "justification for", depending on the specific context.

Is it grammatically correct to say "the reason why is because"?

While commonly used, "the reason why is because" is considered redundant. A more concise phrasing would be "the reason is" or simply "why" followed by the explanation.

What's the difference between "reason why" and "the reason for"?

"Reason why" typically introduces a clause explaining something, whereas "the reason for" is followed by a noun or noun phrase. For instance, "the "reason why" I'm late is that the traffic was bad" versus "the reason for my lateness is the traffic".

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Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: