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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
it is only certain that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "it is only certain that" is not correct in standard written English.
It can be used when expressing a limited degree of certainty about a situation or outcome. Example: "While many factors are in play, it is only certain that some changes will occur."
⚠ May contain grammatical issues
Science
News & Media
Encyclopedias
Wiki
Alternative expressions(20)
it naturally follows that
it seems only logical that
it is fitting that
it is only to be expected that
it is just that
it is just logical that
it is understandable that
it is a foregone conclusion that
the obvious conclusion is that
it is only consistent that
it is no surprise that
it is only fitting that
it was just natural that
it is only just that
it is to be expected that
it stands to reason that
it makes sense that
it is only fair that
it's not surprising that
it is only appropriate that
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
4 human-written examples
Exactly where an electron passed through the slit is unknown; it is only certain that an electron went through somewhere.
Encyclopedias
Of the other ruins, it is only certain that the ancient Roman Theatre still stands - because it was used as a backdrop for executions by Isis.
News & Media
It is only certain that it was presented to the king the year it was dated, 1546.
Wiki
It is only certain that astrocytes do occur in this system [ 4].
Science
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
At this time, it was only certain that Peale would visit Paris a visit to England, with instruction at local mints and refineries, was still under discussion.
Wiki
She shakes her head: "I was only certain that she had to be a woman".
News & Media
For not only can the argument from evil be formulated in terms of specific evils, but that is the natural way to do so, given that it is only certain types of evils that are generally viewed as raising a serious problem with respect to the rationality of belief in God.
Science
She is only certain that she won't vote for a Republican.
News & Media
The company argues that it was only certain trees that could not be cut past that date, not all trees.
News & Media
It's very alienating, and it's very unfair, because it's only certain people that have to do that.
News & Media
" It's only certain medication that we have to buy.
Science
Expert writing Tips
Best practice
When aiming for formal writing, consider restructuring the sentence to use stronger verbs or more precise nouns to convey certainty. For instance, replace "it is only certain that" with "it is evident that" or "the evidence suggests".
Common error
Avoid using "it is only certain that" repeatedly in your writing, as it can make your text sound hesitant and weaken your message. Instead, vary your expressions by using stronger verbs or rephrasing the sentence to emphasize the information directly.
Source & Trust
83%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it is only certain that" functions as a hedge, limiting the scope or degree of certainty being expressed. While understandable, Ludwig AI notes that it's often better to rephrase for increased clarity and impact.
Frequent in
News & Media
30%
Science
30%
Encyclopedias
20%
Less common in
Wiki
20%
Formal & Business
0%
Academia
0%
Ludwig's WRAP-UP
In summary, while the phrase "it is only certain that" is understandable, it's not considered grammatically optimal. Ludwig AI points out this phrasing "is not correct" in standard written English, recommending alternatives for clearer and more impactful communication. Its frequency is rare, and while it appears across diverse sources such as News & Media, Science and Encyclopedias, consider rephrasing using stronger verbs or more direct statements for better clarity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it is only sure that
Replaces "certain" with "sure", offering a slightly less formal synonym while maintaining the core meaning.
it is only definite that
Substitutes "certain" with "definite", emphasizing a firm but limited assurance.
it is only known that
Focuses on the limit of knowledge rather than certainty, highlighting what is established.
it is only evident that
Replaces "certain" with "evident", indicating that something is obvious or apparent, but only to a degree.
it is only clear that
Similar to "evident", "clear" emphasizes a lack of ambiguity, but within specific boundaries.
it is only assured that
Uses "assured" to convey a sense of limited confidence or guarantee.
it is only guaranteed that
Substitutes "certain" with "guaranteed", implying a limited warranty or promise.
it is only factual that
Highlights that something is true based on facts, but within a constrained context.
it is only positive that
Conveys a limited affirmation or confirmation about a specific aspect.
the only certainty is that
Restructures the phrase to emphasize that certainty is limited to the stated fact.
FAQs
What are some alternatives to "it is only certain that"?
Alternatives include "it is only clear that", "it is only evident that", or restructuring the sentence for stronger emphasis.
Is "it is only certain that" grammatically correct?
While understandable, "it is only certain that" is not considered the most grammatically sound phrasing. Ludwig suggests the phrase "is not correct" in standard written English, favoring alternatives for better clarity and impact.
How can I use "it is only certain that" in a sentence?
While possible, it's better to rephrase for clarity. For example, instead of "It is only certain that some changes will occur", consider "Some changes are certain to occur".
What does "it is only certain that" imply?
It implies a limited degree of assurance or knowledge. However, there are stronger and clearer ways to express limited certainty, such as "it is only clear that" or "the evidence suggests".
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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
83%
Authority and reliability
2.8/5
Expert rating
Real-world application tested