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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
is there proof of that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is there proof of that" is correct and usable in written English.
You can use it when questioning the validity or evidence of a claim or statement made by someone. Example: "Before we proceed with the project, I need to ask, is there proof of that assertion you just made?"
✓ Grammatically correct
News & Media
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
2 human-written examples
"I think what Gov. Perry is getting at is that Gov. Romney has claimed to create 100,000 jobs at Bain, and people are wanting to know, is there proof of that claim, and was it U.S. jobs created for U.S. citizens?" she said.
News & Media
Is there proof of that?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
Nor is there proof that weather affects the outcome of a game.
News & Media
New York's crumbling homicide rate, even though there's coarseness everywhere, is proof of that.
News & Media
But what better proof is there of our humanity, that we're alive, than to dream?
News & Media
"It may be that Iraq did quietly slide money in the direction of Al Qaeda so if there is proof of that, that's great," he said.
News & Media
Again, there is no proof of that.
News & Media
There is no proof of that.
News & Media
But there is no proof of that.
News & Media
And if a food is advertised as improving health, for example by lowering cholesterol, the law says the Food and Drug Administration also must agree that there is proof of that claim.
News & Media
The machinists' filing said there was no proof of that.
News & Media
Expert writing Tips
Best practice
Use "is there proof of that" when you want to politely challenge a statement or assertion, prompting the speaker to provide supporting evidence. It's suitable for discussions where verifiable facts are important.
Common error
Avoid using "is there proof of that" in situations where it might sound overly confrontational or accusatory. Instead, consider framing your query more neutrally, such as "what evidence supports that claim?"
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is there proof of that" functions as an interrogative clause used to question the validity or factual basis of a statement. Ludwig AI confirms its grammatical correctness.
Frequent in
News & Media
60%
Science
30%
Formal & Business
10%
Less common in
Encyclopedias
0%
Wiki
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "is there proof of that" serves as a direct yet relatively polite way to question the veracity of a statement. It is deemed grammatically correct by Ludwig AI and sees frequent usage in contexts where factual accuracy is paramount, predominantly within news and media and scientific discourse. While versatile, care should be taken to avoid using it in overly accusatory situations, opting instead for more neutral phrasing when necessary. The provision of alternatives such as "is there evidence for that", offers writers a spectrum of options to fine-tune their approach. Finally, the Ludwig examples show real-world applications, reinforcing its function and purpose.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is there evidence for that
Replaces "proof" with "evidence", maintaining the same core meaning.
do you have evidence of that
Shifts from questioning existence to requesting presentation of evidence.
can you substantiate that claim
Focuses on the need to support a previous statement.
where is the evidence for that
Directly asks for the location or source of the evidence.
what is the basis for that
Asks about the fundamental reasons or justification.
is that a proven fact
Inquires whether a statement has been definitively proven.
is there any verification of that
Questions if confirmation can be found on something
how do you know that
Simple asking for knowledge
what data supports that
Asks directly for tangible data
can you back that up
Asks for confirmation for something that was said
FAQs
What does "is there proof of that" mean?
It's a question asking whether there is evidence or verification to support a statement or claim. It implies doubt and requests confirmation.
When is it appropriate to use "is there proof of that"?
Use it in discussions where factual accuracy is important, and you want to politely challenge a statement. It's suitable in academic, professional, or news-related contexts.
What can I say instead of "is there proof of that"?
You can use alternatives like "is there evidence for that", "do you have evidence of that", or "can you substantiate that claim" depending on the context.
Is "is there proof of that" formal or informal?
It's generally considered neutral to slightly formal, suitable for professional and news contexts. For very informal settings, consider alternatives like "got any proof?" or "really?"
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested