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
this why not
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this why not" is not correct in standard written English.
It seems to be an incomplete thought or a misphrasing, and it does not convey a clear meaning. Example: "I was thinking about going to the party, and this why not could be a good reason to join."
⚠ May contain grammatical issues
News & Media
Wiki
Alternative expressions(2)
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
36 human-written examples
And if you don't do this, why not?
News & Media
You have all winter to debate this, why not start now.
News & Media
Given this, why not ramp up public investments in this area?
News & Media
If you lived through this, why not just go ahead, guys, go for it.
News & Media
If they have strong ideas on this why not enter The Peer Factor.
News & Media
The idea is this: Why not make a wireless headphone that connects by Wi-Fi instead Bluetooth?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
22 human-written examples
Kovacevich says the real benefit of all this why-not thinking is that it gives Wells employees a sense of control and tells them their hard work is appreciated.
News & Media
The SNP MP Ian Blackford asked why the Conservatives are bothering with all this - why not just create an English Parliament ? A. Good question.
News & Media
This is why not many black-green coalitions are likely.
News & Media
At this rate, why not expect another reunion in 2013?
News & Media
I'll leave you with this... Why not gather the most philanthropic, smartest and boldest minds to do what our forefathers did with the Declaration of Independence and write a Declaration of the World?
News & Media
Expert writing Tips
Best practice
When you intend to express "Why not do this?", always ensure the question is grammatically correct to avoid confusion. The rephrased question invites discussion.
Common error
Avoid using the phrase "this why not" in formal writing. It's grammatically incorrect and may confuse readers. Instead, opt for the corrected form "why not this?" or other grammatically sound alternatives.
Source & Trust
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this why not" functions as an interrogative expression when used in contexts aiming to question the rationale behind an action or decision. However, it is considered grammatically incorrect. Ludwig AI confirms this assessment.
Frequent in
News & Media
71%
Wiki
17%
Science
4%
Less common in
Formal & Business
4%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, while the phrase "this why not" appears in various online sources, it's generally considered grammatically incorrect. As Ludwig AI points out, it often serves as an incomplete interrogative expression. For clearer and more effective communication, replace it with grammatically sound alternatives such as "why not this?", or "what is the reason not to do this?". Using correct grammar ensures your message is understood as intended.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
why not this
Reverses the order of the words to create a question.
why not do this
Adds the verb "do" to clarify the intended action.
why shouldn't this be done
Expresses a sense of doubt or disbelief about the possibility of an action.
what is the reason not to do this
Poses a question seeking justification for inaction.
what are the reasons against this
Focuses on the negative aspects and potential problems.
is there a reason not to do this
Asks if there is a specific obstacle or issue to consider.
what's wrong with this
Highlights the presumed shortcomings or faults.
what's the downside of this
Concentrates on the potential disadvantages and risks.
what are the cons of this
Similar to 'what's the downside', but more direct.
are there disadvantages to this
Formal phrasing, emphasizing careful evaluation.
FAQs
What does "this why not" mean?
"This why not" is not grammatically correct. It appears to be an incomplete thought. A better way to phrase it is "why not this?" or "is there a reason not to do this?" depending on what you want to ask.
How can I use "this why not" correctly in a sentence?
The phrase "this why not" isn't grammatically correct. Consider using "why not this?" or rephrasing your question to be more direct.
What are alternatives to "this why not"?
Instead of "this why not", try "why not this?", "what is the reason not to do this?", or "is there a reason not to do this?". The best option depends on the specific context.
Is it okay to use "this why not" in writing?
It's generally best to avoid "this why not" in formal writing. It's grammatically incorrect and may confuse the readers. Instead, opt for grammatically correct forms such as "why not this?".
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
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested