Used and loved by millions
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
rationale for why
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "rationale for why" is correct and usable in written English.
It can be used when explaining the reasoning or justification behind a particular decision or action. Example: "The rationale for why we chose this approach is based on extensive research and analysis of the data."
✓ Grammatically correct
News & Media
Academia
Science
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
60 human-written examples
Long ago Mr. Manilow developed his own rationale for why he earned such hostile reviews.
News & Media
"I mean, there's no other rationale for why they're doing this".
News & Media
Each one has got to have a written rationale for why we're doing it.
News & Media
Include your rationale for why such an article should be included in the series.
News & Media
The rationale for why they should have that power would essentially give them an unlimited power.
News & Media
Finally, this commentary provides a rationale for why tight oil technology improvement is likely to continue.
Academia
Are we searching for a new rationale for why brain death is "really" death?
Academia
I've heard the political wiseguy rationale for why we should care about these things.
News & Media
To get them to go up you have to offer a tremendous rationale for why they should be there".
News & Media
But they added up to an existential question mark rather than a rationale for why he should be president.
News & Media
There was a biological rationale for why it might be so: Fiber makes the stool more bulky.
News & Media
Expert writing Tips
Best practice
When using "rationale for why", ensure that the explanation is clear and directly related to the decision or action being justified. A strong rationale provides a solid understanding of the underlying reasons.
Common error
While "rationale for why" is acceptable, it can sometimes be redundant. Consider using just "rationale" or "reason" followed by a clear explanation to avoid unnecessary repetition and enhance clarity.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "rationale for why" functions as a causal connector, linking a statement to the reasons or justifications behind it. It introduces an explanation or a detailed account of the reasons for a particular action, decision, or belief. As Ludwig AI indicates, this phrase is acceptable and commonly used.
Frequent in
News & Media
36%
Academia
30%
Science
24%
Less common in
Formal & Business
10%
Ludwig's WRAP-UP
The phrase "rationale for why" is a commonly used and grammatically correct way to introduce the reasons or justifications behind a decision, action, or belief. Ludwig AI confirms its acceptability, and example sentences show its frequent use in news, academic, and scientific contexts. While it can sometimes be considered redundant, using alternatives like "reasoning behind" or simply "rationale" can enhance clarity. Providing a solid rationale is crucial for ensuring the audience understands the underlying reasons and motivations. Understanding its usage helps in crafting clear and persuasive explanations across diverse fields.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
reasoning behind why
Focuses on the cognitive process of reaching a conclusion.
justification for why
Emphasizes the act of proving something to be right or reasonable.
basis for why
Highlights the fundamental principle or foundation supporting a decision or action.
grounds for why
Focuses on the sufficient reason or cause.
explanation for why
Centers on clarifying or elucidating the reasons.
reasons for why
Simply uses a plural form to indicate multiple reasons.
purpose for why
Emphasizes the intended outcome or aim.
motivation for why
Highlights the driving force or incentive behind an action.
the why behind
A more concise and informal way to ask for the reasons.
the reasoning for
Highlights the reasons in a more generic way.
FAQs
How can I use "rationale for why" in a sentence?
You can use "rationale for why" to introduce an explanation of the reasons behind a decision or action. For example, "The "rationale for why" we chose this method is its proven effectiveness".
What's a good alternative to "rationale for why"?
Alternatives include "reasoning behind why", "justification for why", or simply stating the "reasons for" something.
Is "rationale for why" grammatically correct?
Yes, "rationale for why" is grammatically correct, although some may consider it slightly redundant. It's widely used and understood in both formal and informal contexts.
What is the difference between "rationale" and "rationale for why"?
"Rationale" alone refers to the underlying principle or justification. Adding "for why" specifies that you are about to explain the reasons behind something, but the two terms are essentially interchangeable, so using only "rationale" is usually sufficient.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested