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
it's reasonably certain
Grammar usage guide and real-world examplesTable 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
1 human-written examples
It's reasonably certain that there will be attempts to provide more demand if Obama wins, and that's all you can ask for at the moment.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Early said Lee's headquarters were at the "Gaines House," but as Longstreet is known to have been at Doctor Gaines's, it is reasonably certain that this, and not William Gaines's home at Fairfield, was Lee's resting-place for the night.
Academia
On Thursday evening, at least, it is reasonably certain Mr. Biden's script has been well scrubbed and he will stick to it, as he did four years ago when he talked about his roots and the perils of Republican rule.
News & Media
The exact date of its invention is not known, but it is reasonably certain that it came after the crayon manner.
Encyclopedias
That inquiry alone could take months, and the Justice Department is unlikely to conclude the Mexican money laundering investigation until it is reasonably certain it has a complete picture of HSBC's conduct.
News & Media
"While as educators we know we never attain 100%, it is reasonably certain that the vast majority of St. Bonaventure's extended family — students, Franciscans, faculty, staff and alumni — share in the rejection of Mr. Paladino's comments and the comments of any who violate our shared values of individual dignity, community inclusiveness and service to others," he added.
News & Media
WASHINGTON/BEIRUT, Nov 13 (Reuters) - The U.S. military said on Friday it was "reasonably certain" a drone strike had killed Jihadi John, Islamic State's "lead executioner" and a symbol of the militant group's brutality.
News & Media
The Pentagon said on Friday that it was "reasonably certain" that an American airstrike had killed Mohammed Emwazi, the Islamic State's most notorious executioner.
News & Media
The US military said it was reasonably certain Emwazi had been killed in the drone strike, which hit a vehicle and killed one other occupant.
News & Media
Just how far back in history organized athletic contests were held remains a matter of debate, but it is reasonably certain that they occurred in Greece almost 3,000 years ago.
Encyclopedias
(It is reasonably certain that he would not have trusted Brown to do any of these things in the face of any serious opposition, and also reasonably certain that he was correct to think so).
News & Media
Expert writing Tips
Best practice
Use this phrase to indicate a high degree of confidence while maintaining a slight hedge, which is particularly effective in academic and journalistic writing to avoid overstatement.
Common error
Avoid over-hedging by combining it with other qualifiers like 'very' or 'quite'. Since 'reasonably' already provides the necessary qualification, adding another adverb can make the sentence sound redundant and weaken your stance.
Source & Trust
90%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it's reasonably certain" serves as an extrapositional introductory construction that provides a modal qualification to a following clause. Ludwig demonstrates that it acts as a strategic hedge, allowing writers to express high confidence while acknowledging the absence of absolute proof.
Frequent in
News & Media
45%
Academia
30%
Science
15%
Less common in
Encyclopedias
5%
Wiki
3%
Formal & Business
2%
Ludwig's WRAP-UP
Ludwig confirms that "it's reasonably certain" is a robust and sophisticated way to assert probability in professional writing. With a verification status of human_verified, the phrase is shown to be most prevalent in journalistic and scientific contexts. Ludwig highlights its utility in bridging the gap between suspicion and absolute certainty, making it an essential tool for writers who value accuracy and nuance. Whether you are analyzing economic trends or historical events, this phrase provides a balanced tone that commands respect without overstepping the available evidence.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it's fairly certain
Slightly less formal and implies a more subjective level of confidence
it is highly probable
Uses more formal vocabulary, often found in scientific or legal contexts
it's almost certain
Increases the degree of certainty compared to the original phrase
it is virtually certain
Indicates the highest possible level of confidence without saying '100%'
it is quite likely
Shifts the focus from certainty to likelihood, sounding a bit softer
it appears highly likely
Adds a layer of observation, implying that the evidence points this way
one can be reasonably sure
Introduces a personal perspective rather than an impersonal 'it' construction
there is a strong likelihood
Uses a noun-based construction to emphasize probability
it is safe to assume
Suggests that any potential error in the conclusion is negligible
it stands to reason
Suggests that the conclusion is a matter of logical deduction
FAQs
How to use "it's reasonably certain" in a sentence?
It is typically used as an introductory clause followed by 'that'. For example: "It's reasonably certain that the project will meet its deadline."
What can I say instead of "it's reasonably certain"?
You can use alternatives like "it is highly probable", "it's almost certain", or "it appears highly likely" depending on the context.
Which is correct, "it's reasonably certain" or "it's fairly certain"?
Both are grammatically correct, but "it's reasonably certain" often implies a conclusion based on careful reasoning or external evidence, whereas "it's fairly certain" can sound slightly more subjective or conversational.
What's the difference between "it's reasonably certain" and "it is certain"?
The main difference is the level of hedge. "it is certain" leaves no room for doubt, while the addition of 'reasonably' acknowledges that while the probability is high, it is not absolute.
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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
90%
Authority and reliability
4.8/5
Expert rating
Real-world application tested