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
decades-long
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "decades-long" is correct and usable in written English.
It is typically used to describe something that has lasted for several decades, often in reference to a trend, relationship, or event. Example: "The decades-long conflict has finally reached a resolution after years of negotiations."
✓ Grammatically correct
News & Media
Science
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
This has been a decades-long trend.
News & Media
A decades-long snooze may be over.
News & Media
He traveled extensively, building decades-long friendships.
News & Media
A decades-long curfew has lifted.
News & Media
We've been in a decades-long renaissance already".
News & Media
On Monday, decades-long bragging rights could be nabbed.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
9 human-written examples
Dianne F. Sadoff writes that Becoming Jane "confirms the two-decades-long megaplexing of Jane Austen".
Wiki
In the Soviet Union, the gap is decades long.
News & Media
It's usually decades long, as opposed to fashion.
News & Media
They have memories three and four decades long.
News & Media
Fighting Foo: a decades long mission.
News & Media
Expert writing Tips
Best practice
Use "decades-long" to clearly and concisely describe processes, trends, or situations that have persisted for multiple decades. This term is especially effective in summarizing lengthy periods of time in news reports, academic papers, and business analyses.
Common error
Avoid using "decades-long" when the context involves a period less than 20 years, or if the exact number of decades is relevant. Instead, specify the exact duration to provide greater precision.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "decades-long" primarily functions as a compound adjective, modifying nouns to describe something that has persisted or spanned several decades. As Ludwig AI confirms, this structure is grammatically sound and widely accepted.
Frequent in
News & Media
80%
Science
15%
Wiki
5%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "decades-long" is a grammatically sound and frequently employed compound adjective used to describe processes, trends, or phenomena spanning multiple decades. Ludwig AI confirms its usability and correctness. While it finds frequent use across contexts like news and media, it is also appropriate for both formal and informal communication. The phrase effectively conveys a sense of prolonged duration, summarizing lengthy periods. For alternatives, consider phrases such as "spanning decades", "multi-decade", or "lasting for decades" to maintain clarity and impact in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
spanning decades
Focuses on the act of extending across several decades, rather than the duration itself.
lasting for decades
Emphasizes the continuation or endurance of something over a period of decades.
multi-decade
More concise, using a prefix to indicate multiple decades.
over several decades
Highlights that the period involves more than one decade.
for many decades
General term indicating a duration covering multiple decades.
decades in the making
Focuses on the process or development taking place over decades, often implying anticipation or preparation.
long-term (spanning decades)
Emphasizes long-term nature, specifying the 'decades' timeframe in parenthesis for clarification.
taking decades
Highlights the time required or consumed over multiple decades.
a history of decades
Focuses on having a background which stretches for decades.
for a few decades
Suggests a period of time limited to several decades.
FAQs
How can I use "decades-long" in a sentence?
You can use "decades-long" to describe something that has lasted for many decades, such as "The "decades-long conflict" has finally ended" or "The company experienced a "decades-long growth"".
What's a good substitute for "decades-long"?
Alternatives include "spanning decades", "multi-decade", or "lasting for decades". The best choice depends on the specific context.
Is it correct to say "a decades-long" or "decades-long"?
The correct form is "decades-long" without the article "a" if it's used as an adjective before a noun. For example, "decades-long study". You would use "a" only if "decades" is the subject: "a few decades later".
What's the difference between "decades-long" and "long-standing"?
"Decades-long" specifies a duration of multiple decades, whereas "long-standing" is more general and indicates something that has existed for a significant period, without specifying the exact length.
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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested