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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 undeniably
Grammar usage guide and real-world examplesUSAGE SUMMARY
'is undeniably' is a correct and usable phrase in written English.
You can use it to emphasize the truth or certainty of an observation or opinion. For example: "The importance of exercise to maintain a healthy lifestyle is undeniably clear."
✓ Grammatically correct
News & Media
Science
Alternative expressions(4)
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
Change is undeniably hard.
News & Media
Piracy is undeniably rife.
News & Media
It is undeniably beautiful.
News & Media
It is undeniably French.
News & Media
This is undeniably true.
News & Media
Now is undeniably the test.
News & Media
The image is undeniably vivid.
News & Media
The evening is undeniably stimulating.
News & Media
This is undeniably a possibility.
News & Media
It is undeniably fragile.
News & Media
This is undeniably important.
News & Media
Expert writing Tips
Best practice
Use "is undeniably" to strengthen your assertion when you want to remove any doubt about the truth of your statement. For instance, "The impact of climate change on coastal communities is undeniably significant."
Common error
Avoid using "is undeniably" for subjective opinions or claims lacking strong evidence. Overusing the phrase can weaken its impact and make your writing sound hyperbolic.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is undeniably" functions as an adverbial phrase, modifying a verb or adjective to express a high degree of certainty or agreement. Ludwig AI confirms its function by providing examples where it emphasizes the truth of a statement.
Frequent in
News & Media
75%
Science
15%
Formal & Business
5%
Less common in
Encyclopedias
1%
Wiki
1%
Reference
1%
Ludwig's WRAP-UP
In summary, the phrase "is undeniably" serves to strongly assert the truth of a statement, minimizing potential disagreement. As Ludwig AI confirms, it's grammatically correct and suitable for various contexts, including formal and informal writing. While its frequency is very common in news, media, and scientific domains, overusing it might weaken its effect. For situations needing a softer tone, alternatives such as "is certainly" or "is arguably" may be more fitting. Remember to use it to strengthen solid arguments rather than subjective opinions.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is undoubtedly
Replaces "undeniably" with "undoubtedly", maintaining a strong sense of certainty but with a slightly different tone.
is indisputably
Substitutes "undeniably" with "indisputably", suggesting that the statement is beyond any dispute.
is irrefutably
Substitutes "undeniably" with "irrefutably", suggesting the statement cannot be disproven.
is without a doubt
Replaces "undeniably" with "without a doubt", offering a more emphatic assertion of certainty.
is certainly
Replaces "undeniably" with "certainly", conveying confidence but potentially with less force.
is clearly
Uses "clearly" instead of "undeniably", indicating that the truth is easily perceived.
is demonstrably
Replaces "undeniably" with "demonstrably", highlighting that the statement can be shown to be true through evidence.
is manifestly
Replaces "undeniably" with "manifestly", suggesting the statement is plainly or clearly apparent.
is patently
Uses "patently" instead of "undeniably", indicating obviousness or self-evidence.
is observably
Changes to "observably", suggesting that the statement can be verified through observation.
FAQs
How can I use "is undeniably" in a sentence?
Use "is undeniably" to emphasize a point that is patently true or difficult to dispute. For example, "The Earth "is undeniably" round" leaves little room for argument.
What are some alternatives to "is undeniably"?
Alternatives include "is undoubtedly", "is indisputably", or "is certainly", depending on the level of emphasis you wish to convey.
Is it redundant to use "very undeniably"?
Yes, using "very undeniably" is redundant. The word "undeniably" already implies a high degree of certainty, so adding "very" does not enhance its meaning and can sound awkward.
What's the difference between "is undeniably" and "is arguably"?
"Is undeniably" suggests a fact that's beyond dispute, while "is arguably" introduces a claim open to debate. Use "is undeniably" for statements with strong evidence and "is arguably" for viewpoints needing further support.
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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