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
proven to be
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "proven to be" is correct and usable in written English.
You can use it when you want to indicate that something has been confirmed to be true or accurate. For example, "It has been proven to be the most effective solution available."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
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
Both have proven to be smart investments.
News & Media
It's proven to be ludicrous".
News & Media
We've proven to be adaptable.
News & Media
"That's proven to be true.
News & Media
That's proven to be the case now".
News & Media
That has proven to be the case.
News & Media
This has proven to be the case.
Academia
all and proven to be ebony solid.
News & Media
"That's proven to be an elusive objective".
News & Media
These antibodies were proven to be neutralizing.
Science
It is proven to be NP hard.
Science
Expert writing Tips
Best practice
Use "proven to be" to express that something has been definitively established through evidence or experience. This phrase adds a sense of authority and reliability to your statement.
Common error
Avoid using "proven to be" when discussing opinions or subjective matters. This phrase is best reserved for situations where empirical evidence supports the claim.
Source & Trust
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "proven to be" functions as a verbal phrase used to attribute a quality or characteristic to a subject that has been definitively established or confirmed. It often implies a rigorous process of verification or validation. Ludwig AI confirms its correctness and usability.
Frequent in
News & Media
45%
Academia
25%
Science
20%
Less common in
Formal & Business
5%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "proven to be" is a versatile and commonly used phrase to indicate that something has been definitively established or confirmed. As Ludwig AI confirms, its grammatical correctness and diverse application across various domains, including news, academia, and science, make it a valuable tool in expressing validated facts and reliable outcomes. When using this phrase, it's essential to ensure that the claim is indeed supported by evidence to maintain credibility. Consider alternatives like "demonstrated to be" or "confirmed to be" to add nuance based on context. Remember to avoid its overuse in subjective contexts to maintain the integrity of your writing. With its established presence in authoritative sources and consistent usage patterns, "proven to be" enhances the clarity and strength of your assertions.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
demonstrated to be
Focuses on the act of showing or proving something through evidence or example.
established to be
Implies that something has been firmly recognized or accepted as true.
confirmed to be
Highlights the verification of something already suspected or predicted.
verified to be
Emphasizes the process of checking or validating the truth of something.
found to be
Indicates that something was discovered or identified through investigation.
determined to be
Suggests a conclusion reached after careful consideration or analysis.
shown to be
Highlights that something has been made evident or apparent.
evidenced to be
Focuses on the presence of evidence that supports a particular claim or state.
ascertained to be
Implies discovering something with certainty, often through investigation.
turned out to be
Emphasizes a result that was not necessarily expected or apparent from the beginning.
FAQs
How can I use "proven to be" in a sentence?
Use "proven to be" to indicate that something has been definitively established as true or effective. For example, "The new strategy has "proven to be" successful in boosting sales."
What are some alternatives to "proven to be"?
You can use alternatives such as "demonstrated to be", "confirmed to be", or "established to be" depending on the nuance you want to convey.
When is it appropriate to use "proven to be"?
It is appropriate to use "proven to be" when you have evidence or data that supports a claim, and you want to emphasize that the claim is not just an opinion but a verified fact. For example, you can replace "The rumor is true" with "The rumor has "proven to be" true".
What's the difference between "proven to be" and "seeming to be"?
"Proven to be" indicates a confirmed reality, supported by evidence. "Seeming to be" suggests an appearance or impression that may not be entirely accurate or verified. It suggests that, while something seems correct, we can't know if it is yet "proven to be" true.
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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
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested