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
this is certainly true
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'this is certainly true' is correct and usable in written English. It can be used to emphasize the truth of something that has just been said. For example: "He was one of the best players on the team. This is certainly true."
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(20)
that is undeniably true
I can attest to that
that's absolutely correct
that's certainly right
i can attest to that
this is hardly true
this is particularly true
this is extremely true
this is particularly the case
this is notably true
this is mainly true
this is largely true
this is especially true
this is precisely true
this is predominantly true
this is essentially true
this is specifically true
this is particularly so
this is mostly true
this is very true
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
This is certainly true.
News & Media
And this is certainly true.
This is certainly true right now.
News & Media
This is certainly true for me.
News & Media
This is certainly true for us.
Academia
This is certainly true from China's perspective.
News & Media
This is certainly true in climate messaging.
News & Media
This is certainly true in my case.
News & Media
This is certainly true of expensive wines.
News & Media
This is certainly true of good ideas about business.
News & Media
This is certainly true of the prison at Osny.
News & Media
Expert writing Tips
Best practice
Use "this is certainly true" to reinforce a point or argument you've just made, adding weight to your statement by confirming its validity.
Common error
While "this is certainly true" is generally acceptable, avoid overusing it in casual conversation, as it can sound overly formal or stiff. Opt for simpler alternatives like "that's true" or "definitely" in informal settings.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this is certainly true" functions as an affirmative expression, used to strongly agree with a preceding statement or to emphasize the validity of a claim. Ludwig AI confirms its correctness and frequent usage across various contexts.
Frequent in
News & Media
43%
Academia
23%
Science
20%
Less common in
Encyclopedias
7%
Formal & Business
5%
Wiki
2%
Ludwig's WRAP-UP
In summary, the phrase "this is certainly true" is a grammatically correct and frequently used expression to strongly affirm a statement. Ludwig AI validates this observation by providing many examples from varied sources. While appropriate in many settings, consider the level of formality of the situation and choose simpler alternatives in very casual conversations. The phrase functions to validate and reinforce preceding statements, conveying confidence in their truthfulness. Its versatility is showcased by its presence in news, academic works, and scientific publications.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that's definitely the case
Emphasizes the validity of a situation, similar to affirming a fact.
that's undeniably true
Stresses the irrefutable nature of a statement.
that's absolutely correct
Expresses strong agreement, particularly in response to a statement.
there's no doubt about that
Highlights the lack of uncertainty regarding a specific point.
that's certainly right
Indicates agreement with a sense of confidence, but can also indicate uncertainty.
that's most assuredly true
Adds a degree of formality and emphasis to the affirmation.
that's indeed the truth
Confirms the veracity of something with a somewhat formal tone.
that's verifiably true
Implies that the truth can be confirmed through evidence.
i can attest to that
Indicates personal confirmation based on direct experience.
i concur completely
A formal way of expressing full agreement.
FAQs
How can I use "this is certainly true" in a sentence?
Use "this is certainly true" to emphatically agree with a previous statement or to underscore the validity of a point. For example, "The data shows a clear upward trend. This is certainly true when we examine the past five years".
What phrases are similar to "this is certainly true"?
Alternatives include "that is undeniably true", "that's definitely the case", or "I can attest to that". The best choice depends on the specific context and desired level of formality.
Is it ever incorrect to use "this is certainly true"?
While grammatically correct, overuse or placement in overly informal contexts might make your writing sound stilted. Consider the tone and audience when deciding whether to use "this is certainly true" or a more casual alternative.
What's the difference between "this is certainly true" and "this is probably true"?
"This is certainly true" expresses a high degree of confidence and conviction, while "this is probably true" indicates a belief that something is likely true but with a degree of uncertainty. Choose the phrase that accurately reflects your level of confidence.
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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