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
One year apart
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "one year apart" is correct and can be used in written English
For example, you could use it in a sentence such as: "The two events occurred one year apart."
✓ Grammatically correct
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
60 human-written examples
Approximately 30% of the women donated multiple samples over the first 10 years of the study, with collections occurring on average one year apart.
Science
Three-hundred and twenty-seven high school students completed a questionnaire that measured social identification with the school, Big Five personality traits and group functioning factors on two occasions approximately one year apart.
An ideal pair would be exposed and control patients admitted on the same date but one year apart, in 2009 and 2008 respectively, to minimize the seasonal effect.
Science
To limit the possible effect of surveillance bias due to first diagnosis, following description focuses on tumours diagnosed at least one year apart.
Science
3) Finally, we found a strong negative association between a measure of mental health (severity of psychological distress based on the GHQ-28) and the PWB which were measured one year apart.
Two sisters have received identical A-level results in the same subjects one year apart.
News & Media
These musicals were originally produced one year apart and "The Baker's Wife" never made it to Broadway.
News & Media
The two rivals were formed just one year apart, Vicenza in 1902 and Hellas Verona in 1903.
News & Media
The pair came into the NBA straight out of school, one year apart, defying the mantra that a college education was required to survive among the fittest.
News & Media
Participants consisted of 478 families who completed parenting and media questionnaires at two time points, approximately one year apart.
Science
Here, grasshopper response to an EN of 15 semi-natural grassland sites embedded in an exotic timber plantation matrix was investigated over two time periods, one year apart.
Expert writing Tips
✓ Best practice
When describing the frequency of events or data collection, use "one year apart" to clearly indicate the time interval between them.
⚠ Common error
Avoid ambiguity by clearly specifying which events are "one year apart". Ensure it's evident whether you're referring to start dates, end dates, or durations.
Linguistic Context
The phrase "one year apart" functions as an adverbial phrase modifying a verb or clause. It specifies the temporal distance between two or more events or data points. As Ludwig AI explains, this phrase is grammatically correct.
Expression frequency: Very common
✓ Frequent in
Science
68%
News & Media
30%
Formal & Business
2%
⚠ Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "one year apart" is a grammatically sound and frequently employed adverbial phrase, primarily used to specify a temporal interval of one year between events or data points. Analysis of the available sources and guidance from Ludwig AI confirms its prevalence across various domains, especially in science and news reporting. While versatile, clarity is key: ensure the context makes clear which events are being separated by this time frame. Related phrases such as "a year later" and "separated by a year" offer alternative ways to express the same concept, but "one year apart" remains a straightforward and reliable choice.
Alternative expressions
Phrases that express similar concepts, ordered by semantic similarity:
One year difference
States directly that there is a difference of one year between two points in time or ages.
Separated by a year
Highlights the separation in time between two events or occurrences.
Twelve months later
Emphasizes the duration as a full period of twelve months, offering a more precise timeframe.
A year in between
Shows a year lying between two events
A year afterward
Focuses on the sequence of events, indicating something happened after a year had passed.
A twelve-month gap
Emphasizes that the time interval forms a gap or space between two events.
More alternative expressions(6)
FAQs
How can I use "one year apart" in a sentence?
You can use "one year apart" to describe events or measurements that are separated by a year. For example, "The two studies were conducted "one year apart"".
What can I say instead of "one year apart"?
You can use alternatives like "a year later", "separated by a year", or "twelve months later depending on the context".
Is it better to say "one year apart" or "a year apart"?
Both "one year apart" and "a year apart" are grammatically correct and can be used interchangeably. The choice often comes down to stylistic preference.
What's the difference between "one year apart" and "in a year"?
"One year apart" describes the interval between two points in time, while "in a year" refers to a point in the future. For example, "The events were "one year apart"" vs. "The project will be completed "in a year"".
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
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested