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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
reason behind why
Grammar usage guide and real-world examplesUSAGE SUMMARY
"reason behind why" is correct and usable in written English.
It can be used when you want to explain the underlying reason for something. For example: "I wanted to understand the reason behind why he was so angry."
✓ Grammatically correct
News & Media
Science
Wiki
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
25 human-written examples
But what remains unexplained is the real reason behind why they were doing so.
News & Media
Or... had she considered the real reason behind why she was late?
News & Media
"There obviously was a reason behind why I didn't play well, and I'll find that reason and address it," he added.
News & Media
The hash function sufficiently screasons all the behinddices so that the distribution of Bob's data among all the bins classified in the KAQ algorithm is disguised as random sampling in the range of the hash function.
The reason behind why intermediate monocytes cannot link to adipose tissues in inflamed condition is unclear.
And find out the reason behind why people do things rather than what they do.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
35 human-written examples
Recognize the fundamental reasons BEHIND why you want to diet.
News & Media
Pete understands this and therefore the reasons behind why we have asked him to leave".
News & Media
We should be looking at some of the reasons behind why we have less and less startups.
News & Media
We've fought back on behalf of venues to tackle the real reasons behind why they are closing.
News & Media
But I think one of the best conversations you can have with yourself, your spouse or your family is about the real reasons behind why you spend money.
News & Media
Expert writing Tips
Best practice
When using "reason behind why", ensure the context clearly benefits from the emphasis on the underlying cause. Sometimes, simpler alternatives like "reason for" can be more concise.
Common error
While grammatically correct, "reason behind why" can sometimes be perceived as redundant. Before using it, consider if a simpler phrasing such as "reason why" or "reason for" would suffice to avoid unnecessary wordiness.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "reason behind why" functions as a noun phrase, typically introducing a clause that explains the cause or justification for a particular situation, action, or event. Ludwig shows many examples of this usage.
Frequent in
News & Media
46%
Science
38%
Wiki
15%
Less common in
Formal & Business
1%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "reason behind why" is a grammatically correct and commonly used expression to introduce an explanation or cause. As shown by Ludwig, it's found in diverse contexts, from news and media to scientific literature. While the phrase is valid and widely used, alternatives such as "reason why" or "reasons for" may offer greater conciseness depending on the specific context. Ludwig AI confirms its usability, noting that it serves to clarify the underlying reason for something. While generally neutral in tone, writers should be mindful of potential redundancy and choose the phrasing that best suits their intended level of emphasis and clarity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
reasons behind why
This alternative uses the plural "reasons", suggesting multiple contributing factors.
explanation behind why
This alternative uses "explanation" instead of "reason", focusing more on the clarification aspect.
of the reasons why
This alternative rephrases using "of the reasons", slightly changing the sentence structure.
factor behind why
This alternative uses "factor", emphasizing the contributing element more directly.
reasons for why
This alternative uses "reasons for" instead of "reason behind", offering a more concise phrasing.
reasoning behind why
This alternative uses "reasoning", highlighting the thought process or logic involved.
motive behind why
This alternative uses "motive", focusing specifically on the intention or drive.
rationale behind why
This alternative uses "rationale", implying a more formal or structured justification.
reason why why
This alternative might be seen as redundant but can be used for emphasis.
of the reasons for why
This alternative combines "of the reasons" with "for why", slightly altering the original structure.
FAQs
How can I use "reason behind why" in a sentence?
You can use "reason behind why" to introduce the explanation for an action or event. For example, "I wanted to know the "reason behind why" the project failed".
What can I say instead of "reason behind why"?
You can use alternatives like "explanation behind why", "reasons for why", or simply "reason why" depending on the context.
Which is correct, "reason behind why" or "reason why"?
Both "reason behind why" and "reason why" are grammatically acceptable, though the latter is more concise. The choice depends on the desired level of emphasis.
What's the difference between "reason behind why" and "reasons for why"?
"Reason behind why" typically refers to a single cause, while "reasons for why" suggests multiple contributing factors. The context dictates which phrasing is more appropriate.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested