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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
certain day
Grammar usage guide and real-world examplesUSAGE SUMMARY
"certain day" is correct and commonly used in written English.
It can be used to refer to a specific day that has been previously mentioned or is already known by the speaker and the listener. For example: - I remember that certain day in May when we first met. - We will meet on a certain day next week, but I can't remember which one. - On that certain day, the sun was shining and the birds were chirping. In these sentences, "certain day" is used to emphasize the specific day being referred to. It can also be used to suggest a sense of importance or significance attached to that particular day.
✓ Grammatically correct
News & Media
Science
Academia
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
53 human-written examples
Then one comes to Abner Hope (Alec B. Francis), an elderly fanatic on astronomy who believes that the world is coming to an end on a certain day.
News & Media
You prepare to pitch a certain day.
News & Media
Because if you timebox in a certain day, you can actually finish the list.
News & Media
And they're regular, arriving always on a certain day, at a certain time.
News & Media
We had someone who promised us concrete information, a meeting on a certain day.
News & Media
Could you ask a friend to spend a certain day a week with you, regularly, one-on-one?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
7 human-written examples
(The exception is certain Sunday afternoons, when the crowds become restive and the cooks become nervous).
News & Media
The document should have reached California by a certain Friday, but didn't.
News & Media
On certain Saturday afternoons, a tidal surge moves quietly throughout the country.
News & Media
This may or may not prove a useful thing to know on certain Saturday nights.
News & Media
Federer was still not certain Monday about his grass-court schedule.
News & Media
Expert writing Tips
Best practice
Use "certain day" when you want to refer to a specific day without explicitly naming it, often because the exact date is not important or is already known to the reader.
Common error
Avoid using "certain day" excessively in formal writing where specificity is preferred. Instead, provide the actual date or a more precise description when possible.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "certain day" functions as a determiner phrase modifying a noun. It specifies a particular day, but without explicitly naming it. Ludwig AI confirms it's grammatically correct. It is used to indicate a specific day that is either already known or doesn't require precise identification in the context.
Frequent in
News & Media
50%
Science
33%
Academia
17%
Less common in
Formal & Business
0%
Social Media
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "certain day" is a grammatically sound and frequently used phrase to denote a specific yet unnamed day. As Ludwig AI confirms, its versatility makes it suitable for various contexts, particularly in news, science, and academic writing. While it offers convenience in communication, remember to provide specific dates when precision is paramount. Consider alternatives like "specific day" or "particular day" for enhanced clarity. Be mindful of overuse in formal writing to maintain a professional tone. The phrase serves as a useful tool for referencing dates without pinpoint accuracy, assuming the context provides sufficient understanding.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
specific day
Replaces "certain" with "specific", emphasizing the particularity of the day.
particular day
Uses "particular" instead of "certain", highlighting the distinctiveness of the day.
designated day
Implies that the day has been officially chosen or assigned.
specified day
Suggests that the day has been explicitly stated or identified.
a given day
Indicates a day that is already known or assumed in the context.
one day
More general term. Refers to an unspecified day in the past or future.
that day
Refers back to a day previously mentioned or understood.
appointed day
Suggests the day has been officially scheduled or decreed.
a set day
Indicates a day that has been prearranged or fixed.
the day in question
Refers to a day that is under discussion or consideration.
FAQs
How can I use "certain day" in a sentence?
You can use "certain day" to refer to a specific day that isn't necessarily named directly. For example, "The event will take place on a "specific day" next month."
What phrases are similar to "certain day"?
Alternatives include "particular day", "specific day", or "designated day", depending on the context.
Is it better to use "certain day" or a specific date?
It depends on the context. Use a specific date if the exact date is important. Use "certain day" if the exact date is not crucial or if it's already understood.
What's the nuance of "certain day" compared to "that day"?
"Certain day" implies a particular but unspecified day, while "that day" refers to a "previously mentioned day" or a day understood from the context.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested