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
any certain time
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "any certain time" is not correct in standard written English.
It is generally used incorrectly as "certain" implies specificity, which contradicts "any" that suggests a lack of restriction. Example: "I can't meet you at any certain time; my schedule is too unpredictable."
⚠ May contain grammatical issues
Science
News & Media
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
So, there were three processes controlling the rate of biosorption; however, only one was rate-controlling in any certain time range.
Science
A fella could get through his training and only do maybe two or three operations in any certain time, but that no longer holds true.
News & Media
I was also kind of working with the idea that two separate people across the world from each other, one's wondering what the other one is doing at any certain time of the day.
News & Media
Speaking after a meeting of the PLO executive committee, Abed Rabbo said that there while there is no precedent that pushes us to go to the UN at any certain time, that doesn't mean that we are hesitant in going to New York.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
Yet a person immutable in the strong sense would be unable to perform any action at a certain time other than what he had previously intended to do.
Science
Would such a test discover, for example, a "time bomb" set to start transferring a certain proportion of votes from one candidate to another at a certain time, or any other programmers' tricks?
News & Media
Hence, not only individuals that had relatively high (or low) AOC at a certain time in any given breeding season tended to do so also at other times of the same breeding season (see Methods), but individuals with relatively high AOC in one year tended to do so also in other years.
Science
We don't have any pressure to get out by a certain time, though.
News & Media
There comes a certain time in your life when you don't wear pyjamas any more.
News & Media
"We just converged at a certain time".
News & Media
Go to bed at a certain time?
News & Media
Expert writing Tips
Best practice
Avoid using "any certain time" in formal writing. Opt for phrases like "any specific time" or "any particular time" to ensure grammatical correctness and clarity.
Common error
Do not combine "any" and "certain" as they create a logical contradiction. "Any" implies a lack of restriction, while "certain" implies specificity. Choose one or the other, or rephrase your sentence for clarity.
Source & Trust
77%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "any certain time" functions as an adverbial modifier, attempting to specify a point in time. However, as Ludwig AI points out, the combination of "any" and "certain" creates a contradiction, making the phrase grammatically questionable.
Frequent in
News & Media
50%
Science
50%
Formal & Business
0%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "any certain time" presents a grammatical challenge due to the conflicting nature of "any" and "certain". While examples exist across various sources, ranging from news media to scientific publications, Ludwig AI identifies the phrase as grammatically incorrect. Therefore, it's best to opt for clearer alternatives such as "any specific time" or "any particular time" to avoid ambiguity and maintain grammatical correctness, especially in formal contexts. It should be used with extreme caution.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
any specific time
Replaces "certain" with "specific" to maintain a sense of particularity while allowing for flexibility indicated by "any".
any particular time
Substitutes "certain" with "particular" to achieve a similar effect as "any specific time", emphasizing a distinct but unspecified moment.
any given time
Emphasizes a point in time that is under consideration, replacing the need for both "any" and "certain".
at any moment
Focuses on the possibility of something happening at any unspecified point.
at any point in time
Highlights the possibility within a broader temporal scope.
at whatever time
Conveys that the exact time does not matter, offering a sense of indifference.
at a certain time
Omits "any", focusing on a specific, though not necessarily known, time.
at some time
Indicates that something will happen, but the exact timing is not specified.
whenever
A single word replacement indicating that something can happen at any time.
at all times
Expresses that something is true or happens continuously.
FAQs
What's wrong with the phrase "any certain time"?
The phrase "any certain time" is generally considered incorrect because "any" suggests a lack of restriction, while "certain" implies specificity. This creates a contradiction.
What can I say instead of "any certain time"?
You can use alternatives like "any specific time", "any particular time", or "at any moment" depending on the context.
Is "any certain time" ever correct?
While you might find the phrase "any certain time" in some informal contexts, it's generally best to avoid it in formal writing. It's often perceived as grammatically incorrect.
How can I make sure my sentence is grammatically sound when I want to express an unspecified time?
Use phrases like "at any given time", "at some time", or "at whatever time" to express an unspecified point in time while maintaining grammatical correctness.
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
77%
Authority and reliability
2.8/5
Expert rating
Real-world application tested