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
basis of what
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "basis of what" is correct and usable in written English.
It can be used when questioning the foundation or reasoning behind a statement, decision, or argument. Example: "Can you clarify the basis of what you just said regarding the project's timeline?"
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(5)
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
On the basis of what?
News & Media
On the basis of what, some of us would ask.
News & Media
"That is the whole basis of what we do.
News & Media
That's the basis of what I believe in".
News & Media
If so, on the basis of what evidence?
News & Media
Professor Craig Wright: Okay, Symphonie fantastique, the basis of what?
Academia
We must decide, he often says, not on the basis of what is meant, but on the basis of what is said.
News & Media
Normally, we seek evidence, and form conclusions on the basis of what we find.
News & Media
Invest in a company on the basis of what a company says?
News & Media
Secrecy is the basis of what we do, and we require your extreme discretion.
News & Media
They are tests that select and segregate children on the basis of what they can't do.
News & Media
Expert writing Tips
Best practice
When using "basis of what" consider if the context requires a more formal or direct alternative, such as "on what grounds" or "what is the rationale?"
Common error
Avoid using "basis of what" when referring to physical objects or concrete items. It's generally used for abstract concepts, reasoning, or justifications.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "basis of what" functions as a prepositional phrase used to question or inquire about the foundation, justification, or reasoning behind a statement, action, or belief. Ludwig AI confirms its correct usage.
Frequent in
News & Media
50%
Academia
25%
Science
15%
Less common in
Encyclopedias
3%
Formal & Business
3%
Wiki
4%
Ludwig's WRAP-UP
In summary, "basis of what" is a versatile prepositional phrase employed to question or challenge the foundation of a statement or action. Ludwig AI validates its grammatical correctness and broad applicability. While suitable for various contexts, including news, academic discussions, and general discourse, it's essential to consider the nuance required in formal settings, where alternatives like "on what basis" might be more appropriate. The phrase's frequency and presence in authoritative sources like The Guardian and The New York Times underscore its relevance in contemporary English. Therefore, using this phrase to challenge the evidence, assumptions or logic in an argument is widely appropriate.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
on what grounds
Focuses specifically on the justification or reasons for something.
upon what foundation
Emphasizes the fundamental principles or elements that something is built on.
with what justification
Directly challenges the reasons provided to support something.
by what authority
Questions the legitimacy or authorization behind an action or decision.
what's the justification
Short version of "what is the justification".
what evidence supports
Specifically seeks the proof or data that validates a claim.
according to what
Inquires about the source or standard being used.
what is the rationale
Asks for the underlying logic or reasoning behind an action or decision.
based on which criteria
Highlights the specific standards or measures used for evaluation.
on whose say-so
Questions the person or entity providing the authorization.
FAQs
How can I use "basis of what" in a sentence?
You can use "basis of what" to question the reasoning or evidence behind a statement. For example, "On the "basis of what" evidence are you making that claim?"
What's the difference between "basis of what" and "on what basis"?
"Basis of what" often implies a request for clarification or justification, while "on what basis" is a more formal way to ask about the underlying reasons or principles. They are largely interchangeable but carry slightly different tones.
What are some alternatives to "basis of what"?
Alternatives include "on what grounds", "according to what", or "what is the rationale?" depending on the specific nuance you wish to convey.
Is "basis of what" appropriate for formal writing?
While usable, "basis of what" might be considered less formal. In professional or academic contexts, consider using "on what basis" or "what is the justification?" for a more polished tone.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested