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
at ten-year intervals
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "at ten-year intervals" is correct and usable in written English.
You can use it to describe events or occurrences that happen every ten years. Example: "The organization conducts a comprehensive review of its policies at ten-year intervals to ensure they remain relevant."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(3)
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
Donald Fagen: Well, I think the first three albums I did, which appeared at ten-year intervals, more or less ended up to be a trilogy.
News & Media
Sampled at ten-year intervals over the last three decades, the summer's number one singles present an appalling index of failure.
News & Media
Using the decadal datasets, we were able to calculate growth rates at ten-year intervals for each of the annuli.
Science
The years, taken at ten-year intervals, fall into a pattern.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
Laboratory tests including blood chemistry, hematology, blood glucose, and HbA1c were performed at screening, baseline, and 2-month (1st year), 3-month (2nd year), and 6-month (3rd year) intervals.
Science
High burnout was predicted by Impulsivity trait, Depressive symptoms at 1st year and Financial concerns at 1st year.
Science
The annual incremental loss of HBeAg in patients receiving Lamivudine was 25 (41.6%) at end of 1st year, 33 (55%) at 2nd year and 35 (58.3%) at 3rd year.
Science
The first film in the series was released under the title Star Wars on May 25, 1977, by 20th Century Fox, and became a worldwide pop culture phenomenon followed by two sequels, released at three-year intervals.
Wiki
He's talking about what would be the 12th installment of his monumental documentary series tracking a group of English schoolchildren from different social spheres at seven-year intervals.
News & Media
In order to mark stark the length of sentence being requested, he showed a slideshow of prominent cultural and political events, at ten year intervals, over the last four decades.
News & Media
The others followed at two-year intervals.
News & Media
Expert writing Tips
Best practice
When using "at ten-year intervals", ensure the context clearly establishes the starting point for these intervals. For example, specify "starting in 2020, the data will be reviewed at ten-year intervals" to avoid ambiguity.
Common error
Avoid assuming "at ten-year intervals" implies consistent activity throughout the period. The phrase indicates occurrences specifically at the end of each ten-year block, not continuous action.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "at ten-year intervals" functions as an adverbial phrase, modifying a verb or clause to specify the frequency or timing of an action or event. Ludwig AI confirms that the phrase is grammatically correct and usable. For example, 'The organization conducts reviews at ten-year intervals.'
Frequent in
News & Media
37%
Science
33%
Wiki
13%
Less common in
Formal & Business
7%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "at ten-year intervals" is a grammatically sound and usable adverbial phrase that specifies a recurring timeframe of ten years. As Ludwig AI confirms, this phrase is correct. Although its occurrence is uncommon, it is suitable for formal and neutral contexts such as news, scientific, or professional documents. When using this phrase, it's important to ensure clarity about the starting point and to avoid implying continuous activity throughout the entire period. For those seeking alternatives, options like "every decade" or "once a decade" provide simpler ways to express the same concept.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
every decade
Replaces "ten-year intervals" with a single word, simplifying the phrase.
once a decade
Emphasizes the single occurrence within each decade.
every ten years
A more direct and explicit phrasing of the same concept.
decennially
A single-word adverb that means occurring every ten years.
at decadal intervals
Uses the adjective "decadal" to describe the intervals.
every tenth year
Highlights the specific year in each set of ten.
in ten-year cycles
Focuses on the cyclical nature of the occurrences.
periods of ten years
Emphasizes the length of the periods between occurrences.
with a ten-year periodicity
Uses a more scientific term, "periodicity", to describe the interval.
every 3650 days
Provides a precise numerical equivalent for the interval.
FAQs
How can I use "at ten-year intervals" in a sentence?
You can use "at ten-year intervals" to describe events that recur every ten years, such as "The census is conducted "every decade", so data is collected at ten-year intervals."
What are some alternatives to "at ten-year intervals"?
Alternatives include "every decade", "once a decade", or "every ten years". The best choice depends on the specific context and desired level of formality.
Is it correct to say "in ten-year intervals" instead of "at ten-year intervals"?
While "in ten-year intervals" isn't incorrect, "at ten-year intervals" is the more common and idiomatic phrasing.
What does "at ten-year intervals" imply about the activity between those intervals?
"At ten-year intervals" simply specifies when something occurs; it does not necessarily imply anything about activities during the intervening years.
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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested