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
demonstrably so
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "demonstrably so" is correct and usable in written English.
It can be used to assert that something can be clearly demonstrated or proven to be true. Example: "The results of the experiment were demonstrably so, confirming the initial hypothesis."
✓ Grammatically correct
News & Media
Formal & Business
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
9 human-written examples
This was false, and demonstrably so, but Fiorina just kept saying it.
News & Media
Secondly, it must not be merely "technically" independent, but demonstrably so.
News & Media
The MPs concluded: "Goldman Sachs should have been either 'in' or 'out' of the deal, and demonstrably so.
News & Media
And yet, regardless of what Russell thinks about his site or his own intentions, there's no denying that dating is racially motivated — and online dating, demonstrably so.
News & Media
Goldman Sachs, unpaid adviser to Philip Green and his Taveta group "Should have been either 'in' or 'out' of the deal, and demonstrably so.
News & Media
I imagine that Russia and China can be tricky bedfellows… I think the arts can be very influential and demonstrably so.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
47 human-written examples
We can encourage energy companies to spend more of their resources on the development of sustainable energy products, and we can reward those companies that demonstrably do so by using their products to the exclusion of others.
News & Media
These were also not demonstrably true, so would require justification themselves, and any appeal to these principles in such a justification would be viciously circular.
Science
"I thought it was demonstrably untrue, but so what?" he said.
News & Media
It was well understood that an edifice so demonstrably comprised of concrete and steel would also become an unforgettable metaphor.
News & Media
Strident feminism can seem out of place — even tacky — in a world where women have come so demonstrably far.
News & Media
Expert writing Tips
Best practice
Consider the audience and context; while "demonstrably so" is appropriate for formal writing, a simpler phrase might be better suited for casual communication.
Common error
Avoid using "demonstrably so" in everyday conversations or informal writing. Its formal tone can sound stilted or pretentious in casual settings; opt for simpler alternatives like "clearly" or "obviously".
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "demonstrably so" functions as an adverbial phrase, modifying a verb or clause to indicate that something is undeniably true or has been proven. Ludwig indicates that the phrase is grammatically correct and usable in written English. The Examples from Ludwig showcase how it is used to strengthen a claim or statement.
Frequent in
News & Media
60%
Formal & Business
20%
Science
20%
Less common in
Reference
0%
Wiki
0%
Academia
0%
Ludwig's WRAP-UP
In summary, "demonstrably so" is a grammatically sound and relatively formal phrase used to assert that something is undeniably true. Ludwig AI confirms its correctness and provides examples across various contexts, predominantly in news and media sources. While effective in formal writing, it's advisable to use simpler alternatives in casual settings. Its purpose is to strengthen claims with proof, lending credibility to the statement being made. Using "demonstrably so" indicates that the claim is not merely asserted but also supported by clear and evident data.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
demonstrably true
Similar, but explicitly states "true".
clearly evident
Focuses on the clarity of the evidence.
plainly apparent
Emphasizes the obviousness of the fact.
unquestionably true
Highlights the lack of doubt surrounding the truth.
indisputably
Stresses the inability to dispute the matter.
patently obvious
Implies that the fact is easily and immediately recognized.
conclusively proven
Highlights the finality and strength of the proof.
undeniably
Indicates that denial is impossible.
verifiably accurate
Emphasizes the ability to verify the accuracy.
incontrovertibly
Stresses that something cannot be argued against.
FAQs
How can I use "demonstrably so" in a sentence?
Use "demonstrably so" to emphasize that something is clearly proven or evident. For example, "The data supports the hypothesis, and the conclusions are "demonstrably so"".
What's a simpler way to say "demonstrably so"?
Alternatives to "demonstrably so" include phrases like "clearly evident", "plainly apparent", or "obviously" depending on the context.
Is "demonstrably so" formal or informal?
"Demonstrably so" is generally considered a formal expression. It's more appropriate for academic, professional, or journalistic writing than for casual conversation.
What is the difference between "demonstrably true" and "demonstrably so"?
"Demonstrably true" explicitly states that something is true and can be proven. "Demonstrably so" implies the same meaning but is more concise. The choice depends on the desired level of emphasis and formality. In most cases, they are interchangeable.
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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested