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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
are extensive in
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are extensive in" is correct and usable in written English.
It can be used to describe the breadth or depth of something, often in relation to knowledge, resources, or activities. Example: "The research findings are extensive in their implications for future studies in the field."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(6)
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
26 human-written examples
He intends to make his breeding interests as extensive as his racing operations, which are extensive in deed.
News & Media
Swamps are extensive in the Western Dvina basin, but most of the province is in mixed forest of pine, spruce, oak, birch, and alder.
Encyclopedias
Sedimentaries of the Katangan Complex (about 620 million years old) are extensive in the central areas, and mineralization of these rocks is the basis of Zambia's mining industry.
Encyclopedias
Missing areas are often left missing, and damage is often repaired only if doing so does not require unacceptably invasive treatments that are extensive in nature or that may not be reversible.
Encyclopedias
Secondary forests are extensive in the tropics.
Human activities are extensive in California and likely have some degree of impact in nearly every basin.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
34 human-written examples
Surveillance is extensive in this frightening world.
News & Media
The coverage of Fort Hood will, rightfully, be extensive in the next few days.
News & Media
11.56am: By the time the Guardian reported that phone hacking was extensive in July 2009, Blair was no longer the commissioner.
News & Media
The Wisconsin Glacial Stage was extensive in Wisconsin as well as in New York, New England, and the Canadian Maritime Provinces.
Encyclopedias
The impact of his death was extensive, in part because it was the first doping death to be televised.
News & Media
Expert writing Tips
Best practice
Use "are extensive in" to emphasize the significant scope, scale, or prevalence of something, ensuring the context clearly supports this interpretation.
Common error
Avoid using "are extensive in" when simpler alternatives like "are large" or "are numerous" would suffice. Overusing the phrase can make your writing sound unnecessarily complex.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are extensive in" functions as a descriptive adjective phrase, modifying a noun or noun phrase to indicate that something has a wide scope, a large quantity, or significant reach. As confirmed by Ludwig, this phrase is correct and usable in written English.
Frequent in
Science
62%
News & Media
25%
Encyclopedias
8%
Less common in
Wiki
4%
Formal & Business
1%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "are extensive in" is a grammatically sound and relatively common expression used to describe something that is broad in scope, widespread, or considerable, as confirmed by Ludwig. Predominantly found in scientific and news-related contexts, it conveys the magnitude or scale of a given subject. While effective, writers should be mindful of potentially simpler alternatives in less formal settings. Common alternatives include "are widespread in" or "are common in". Understanding these nuances will help writers effectively employ this phrase, while avoiding overuse or misapplication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
are broad in scope
Focuses on the breadth of something.
are widespread throughout
Emphasizes the geographical distribution or prevalence.
are comprehensive regarding
Highlights thoroughness and completeness.
are far-reaching in their impact
Stresses the consequences or effects.
are considerable within
Indicates a substantial amount or degree.
are abundant in
Focuses on plentiful availability.
are prevalent among
Highlights the commonness within a group or population.
are significant within
Emphasizes importance or magnitude.
are rich in
Indicates a high concentration of something desirable.
are substantial in
Highlights the size or importance.
FAQs
How can I use "are extensive in" in a sentence?
Use "are extensive in" to describe something that covers a large area, includes many elements, or has a significant impact. For example, "The forests "are extensive in" this region".
What are some alternatives to "are extensive in"?
You can use alternatives such as "are widespread in", "are prevalent in", or "are common in" depending on the specific context.
Is it correct to say "is extensive in" instead of "are extensive in"?
No, use "is extensive in" for singular subjects and "are extensive in" for plural subjects to maintain subject-verb agreement. For instance, "The damage is extensive" versus "The damages "are extensive in" several areas".
What's the difference between "are extensive in" and "are intensive in"?
"Are extensive in" refers to the scope or breadth of something, while "are intensive in" refers to the degree of concentration or focus. For example, "The forests "are extensive in" area", versus "The farming practices "are intensive in" resource use".
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested