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
is demonstrably true
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is demonstrably true" is correct and usable in written English.
It can be used when asserting that something can be proven or shown to be true through evidence or logical reasoning. Example: "The theory of evolution is demonstrably true, supported by extensive scientific research and fossil records."
✓ 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
21 human-written examples
That is demonstrably true".
News & Media
And sometimes, old is demonstrably true.
News & Media
It is demonstrably true that people derive pleasure from their donations.
News & Media
In this case that old saw "it isn't all about winning" is demonstrably true.
News & Media
Their argument – that her trenchant views on gender reassignment incite unpleasantness – is demonstrably true.
News & Media
It is demonstrably true that democracies rarely go to war with other democracies and that politically liberal regimes are more likely to favor liberal economic systems.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
39 human-written examples
It's demonstrably true that academic selection is good for selected pupils and bad for the others.
News & Media
We are saying — and I think it's demonstrably true — that they roughly define the politically realistic realm of policy outcomes.
News & Media
Whether you like Trump or not, it's demonstrably true that he says things that are easily proved false, over and over again.
News & Media
David R. Brink, a retired lawyer in Minneapolis and a past president of the American Bar Association, said that "as long as the ads are demonstrably true, they are probably all right from an ethical point of view".
News & Media
His approach explains part of the Christian narrative but not everything.He is entitled to challenge conventional ecclesiastical wisdom, but that does not mean his alternative theories are demonstrably true.
News & Media
Expert writing Tips
Best practice
Use "is demonstrably true" when you want to emphasize that a statement is not just believed to be true, but can be proven with evidence or logic. It adds a layer of authority and certainty to your writing.
Common error
Avoid using "is demonstrably true" too frequently, as it can make your writing sound repetitive and overly assertive. Use it strategically for key points that require strong emphasis.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is demonstrably true" functions as an adverbial phrase used to modify a statement, asserting that the statement's truth can be proven or demonstrated with evidence. Ludwig AI validates its usability in written English.
Frequent in
News & Media
68%
Science
20%
Formal & Business
12%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "is demonstrably true" serves to assert the provable nature of a statement, emphasizing that it's supported by evidence. As Ludwig AI confirms, it's grammatically correct and usable in written English. Its frequency of usage is classified as "common", predominantly appearing in news and media, followed by science contexts. Related phrases, like "is undeniably true" or "is verifiably true", offer subtle shifts in emphasis. While powerful, judicious use prevents overuse. Ludwig's analysis shows its suitability for scenarios where emphasizing provability enhances the argument's persuasiveness.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is undeniably true
Replaces "demonstrably" with "undeniably", suggesting the truth is impossible to dispute.
is verifiably true
Substitutes "demonstrably" with "verifiably", emphasizing the truth can be checked or proven.
is patently true
Replaces "demonstrably" with "patently", indicating the truth is obvious or clear.
is evidently true
Uses "evidently" in place of "demonstrably", showing the truth is apparent from the evidence.
is observably true
Replaces "demonstrably" with "observably", highlighting that the truth can be seen or noticed.
is manifestly true
Substitutes "demonstrably" with "manifestly", suggesting the truth is plainly or clearly apparent.
is conclusively true
Replaces "demonstrably" with "conclusively", emphasizing that the truth is proven beyond doubt.
is factually accurate
Shifts the focus to factual accuracy, replacing the emphasis on demonstration.
is beyond question
Expresses that the truth is so well-established that it cannot be doubted.
is certainly the case
Expresses certainty about a situation, changing the focus from demonstrable proof to strong affirmation.
FAQs
How can I use "is demonstrably true" in a sentence?
You can use "is demonstrably true" to emphasize the validity of a statement, such as: "The claim that exercise improves mood "is demonstrably true", supported by numerous studies."
What are some alternatives to "is demonstrably true"?
Alternatives include "is undeniably true", "is verifiably true", or "is patently true". The best choice depends on the specific nuance you want to convey.
Is it better to say "is demonstrably true" or "is obviously true"?
"Is demonstrably true" suggests that the statement can be proven with evidence, while "is obviously true" implies that it's self-evident. Use "is demonstrably true" when you want to emphasize the presence of supporting evidence.
What does "demonstrably" mean in "is demonstrably true"?
"Demonstrably" means "in a way that can be shown or proven". So, "is demonstrably true" means that something can be proven to be true through evidence or reasoning.
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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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested