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
not a day
Grammar usage guide and real-world examplesUSAGE SUMMARY
"not a day" is a correct and usable phrase in written English.
You can use it when referring to a time period and expressing that a certain length of time has not passed. For example: "It's been nine months since her passing - not a day goes by without me missing her."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(20)
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
51 human-written examples
She looks to me not a day over 70.
News & Media
Not a day for goalkeepers.
News & Media
Not a day goes by.
News & Media
Not a day holiday, not a nothing.
Academia
There's not a day that goes by..
News & Media
Sunday is not a day of rest.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
9 human-written examples
It was a Saturday, not a Sunday.
News & Media
Interrogation is not a Sunday-school class.
News & Media
The incident happened on a Sunday, not a Monday.
News & Media
I suspect JEFF KENT is the main reason it's a Thursday, not a Tuesday.
News & Media
Calendar days; however, any time period will run until a day that is not a Saturday, Sunday, or legal holiday.
Academia
Expert writing Tips
Best practice
Use "not a day" to emphasize the continuous nature of an action, feeling, or absence. It's effective in conveying a sense of unwavering consistency or longing. For example, "Not a day goes by that I don't think of her" underscores a persistent memory.
Common error
Avoid using "not a day" when referring to future events that have not yet occurred. The phrase implies a continuous state over a period already experienced, so it doesn't fit scenarios that haven't happened yet. For instance, instead of saying, "Not a day will go by that I won't study," opt for "I will study every day."
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not a day" primarily functions as an adverbial phrase modifying a verb, often to emphasize the continuous or consistent nature of an action or state. Ludwig AI confirms its proper usage.
Frequent in
News & Media
63%
Academia
11%
Science
8%
Less common in
Formal & Business
5%
Reference
3%
Encyclopedias
2%
Ludwig's WRAP-UP
In summary, "not a day" is a grammatically sound and frequently used phrase that functions as an adverbial modifier, designed to emphasize the continuous nature of an action, feeling, or absence. Ludwig AI validates its proper usage across a range of contexts. Predominantly found in news and media, it conveys a sense of unwavering consistency or longing. Related phrases include "never a day" and "no day goes by", offering similar emphasis. When writing, use "not a day" to highlight persistent memories or ongoing commitments, but avoid it in future scenarios. Be clear, concise, and ensure the phrase accurately reflects the continuous state you intend to convey.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
never a day
Emphasizes the absence of a particular day or occurrence within a given period.
no day goes by
Indicates the constant recurrence of a thought, event, or feeling.
not once in a day
Highlights the infrequency or complete lack of something happening during the course of a day.
without a single day
Stresses the uninterrupted nature of an event or feeling, lacking any breaks.
not a single day passes
Focuses on the continuous flow of time and the persistence of a feeling or event.
not even for a day
Underscores the refusal to allow something even for a short duration.
not in any day
Indicates the lack of occurrence on any specific day.
never on any day
Highlights that something has not occurred on any specific day.
every single day
Emphasizes the daily and consistent nature of an event or feeling.
each and every day
Stresses the daily recurrence and importance of a task or event.
FAQs
How can I use "not a day" in a sentence?
You can use "not a day" to express that something happens constantly or that time passes without something occurring. For example, "Not a day goes by that I don't think of you", or "Not a day passes without me learning something new."
What are some alternatives to the phrase "not a day"?
Some alternatives include phrases like "never a day", "without a single day", or "no day goes by", which all convey a similar sense of continuousness or absence.
Is it grammatically correct to use "not a day"?
Yes, "not a day" is grammatically correct and commonly used in English to emphasize the consistency or frequency of an event or feeling. For example, "There's not a day that goes by when I don't miss her."
What's the difference between "not a day" and "never a day"?
While both phrases are similar, "not a day" often implies a sense of ongoing action or thought, whereas "never a day" can emphasize the complete absence of something. They are largely interchangeable, but the subtle nuance depends on the specific context.
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
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested