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
unquestionable proof that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "unquestionable proof that" is correct and usable in written English.
It can be used when asserting that evidence or information is so strong that it cannot be doubted or disputed. Example: "The findings presented in the study provide unquestionable proof that climate change is accelerating at an alarming rate."
✓ 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
1 human-written examples
Definitive, absolutely unquestionable proof that sports and music never mix.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
I'm proof that's not true.
News & Media
Need proof that's closer to home?
Science & Research
This is the proof that it works".
News & Media
Proof that the West is incorrigibly impious?
News & Media
Is there proof that she actually did?
News & Media
"Proof that the male is contracepting".
News & Media
The proof that this is unique.
News & Media
We're living proof that opposites attract.
News & Media
A sure proof that Russia is listenin.
News & Media
It's proof that she exists.
News & Media
Expert writing Tips
Best practice
When employing the phrase "unquestionable proof that", consider whether the evidence truly leaves no room for doubt. Ensure that alternative interpretations or counterarguments are thoroughly addressed.
Common error
Avoid using "unquestionable proof that" when the evidence is circumstantial or open to interpretation. Overstating the strength of evidence can undermine your credibility.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "unquestionable proof that" functions as a noun phrase that introduces and emphasizes the certainty of the evidence being presented. As Ludwig AI suggests, the phrase is grammatically correct and usable.
Frequent in
News & Media
50%
Science
25%
Wiki
25%
Less common in
Encyclopedias
0%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "unquestionable proof that" is a grammatically sound phrase used to introduce evidence that is asserted to be completely certain and irrefutable. Ludwig AI confirms its correct usage. While relatively rare, this phrase appears across news media, scientific documents, and wiki pages. When employing this phrase, ensure the evidence is robust, verifiable, and truly leaves no room for doubt, as overstating claims can undermine credibility. Consider alternatives like "irrefutable evidence that" or "indisputable evidence that" based on the context and the strength of your evidence.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
irrefutable evidence that
Replaces "unquestionable proof" with "irrefutable evidence", maintaining the strong assertion of validity.
indisputable evidence that
Substitutes "unquestionable" with "indisputable", highlighting the lack of room for argument.
conclusive evidence that
Replaces "unquestionable" with "conclusive", focusing on the finality of the evidence.
definitive proof that
Uses "definitive" to emphasize the completeness and authoritativeness of the proof.
undeniable evidence that
Similar to "indisputable", stressing the impossibility of denying the evidence.
absolute certainty that
Shifts from "proof" to "certainty", focusing on the assuredness of the conclusion.
clear evidence that
A more direct alternative that indicates the proof is easy to see and understand.
compelling evidence that
Suggests the proof is persuasive and convincing.
certain demonstration that
Emphasizes the act of showing or proving something with certainty.
uncontestable evidence that
Stresses the impossibility of contesting the evidence presented.
FAQs
How can I use "unquestionable proof that" in a sentence?
You can use "unquestionable proof that" to introduce evidence that strongly supports a claim, such as: "The study provides "unquestionable proof that" the new treatment is effective".
What are some alternatives to "unquestionable proof that"?
Alternatives include "irrefutable evidence that", "indisputable evidence that", or "conclusive evidence that", depending on the level of certainty you wish to convey.
When is it appropriate to use "unquestionable proof that"?
Use "unquestionable proof that" when you possess compelling, verified evidence that leaves no room for reasonable doubt. Avoid using it if the evidence is preliminary or subject to interpretation.
What's the difference between "unquestionable proof that" and "strong evidence that"?
"Unquestionable proof that" implies a level of certainty that eliminates any reasonable doubt, while "strong evidence that" suggests compelling support that may still be open to some interpretation.
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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
4.5/5
Expert rating
Real-world application tested