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
an extensive topic
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "an extensive topic" is correct and usable in written English.
You can use it when referring to a subject that covers a wide range of information or details. Example: "Climate change is an extensive topic that encompasses various scientific, social, and economic aspects."
✓ Grammatically correct
Science
News & Media
Wiki
Alternative expressions(16)
a broad subject
a comprehensive theme
a wide-ranging issue
a complex subject
a substantial matter
a multifaceted issue
a comprehensive issue
an intense topic
an extensive item
an extensive theme
an extensive subject
an extensive confined
an extensive discussion
a very comprehensive subject
a very broad subject
a very wide subject
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
There is an extensive topic dealing with Turán type inequalities, and it has been generalized in many directions for various orthogonal, polynomial and special functions.
Research devoted to this has been an extensive topic in last decade and so were the practical applications, that cover manufacturing systems, chemical processes, robotics, etc.
Science
Which is an extensive topic for another time.
News & Media
Cracking is an extensive topic, if you require more technical details try http://www.hackcanada.com/blackcrawl/hack/howtocrk.txt.txt
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
It is based on a semi-structured, extensive topic guide.
Science
In the area of cancer prevention, plants consumption such as spices and their constituents as potential chemopreventive agents remains an extensive research topic.
Cerebrovascular venous development and intracranial vascular malformations are extensive topics for which volumes of text may be devoted.
The talks with Fukui are likely to cover such extensive topics as the overall performances of the U.S. and Japanese economies, ways to spur growth following the Japanese election of Sept. 11, the state of the global economy and the growth of the Chinese and Indian economies.
News & Media
Areas for exploration across all cases included three extensive topics: What cases are referred?
Science
Areas for systematization across all cases included the three extensive topics.
Science
Just scroll down to the bottom of the home page to see an extensive list of topics covered by new2usa.com.
Science & Research
Expert writing Tips
Best practice
Use "an extensive topic" when you want to convey the breadth and depth of a subject, implying that it has many facets and complexities.
Common error
Avoid presenting "an extensive topic" as simple or easily understood. Acknowledge its complexities to maintain credibility and show a thorough understanding.
Source & Trust
76%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an extensive topic" functions as a noun phrase, where "extensive" modifies the noun "topic". It typically serves to introduce or refer to a subject that encompasses a broad range of information and complexities, aligning with Ludwig's assessment as a correct and usable English phrase.
Frequent in
Science
50%
News & Media
37%
Wiki
13%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "an extensive topic" is a grammatically correct and usable phrase in English, as confirmed by Ludwig. While relatively infrequent, it effectively conveys the broad scope and complexity of a subject. It is most commonly found in scientific and news-related contexts. When using this phrase, ensure you provide an overview of the topic's main areas to guide your audience. Consider alternatives like "a broad subject" or "a comprehensive theme" for variety. Avoid oversimplifying the topic to maintain credibility. The examples provided by Ludwig offer a glimpse into how this phrase is employed across diverse fields.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a broad subject
Replaces "extensive" with "broad", emphasizing the wide scope of the topic.
a comprehensive theme
Substitutes "topic" with "theme" and "extensive" with "comprehensive", highlighting the thoroughness of the subject matter.
a wide-ranging issue
Uses "wide-ranging" to describe the topic, focusing on its diverse aspects.
a complex subject
Emphasizes the intricacy and multifaceted nature of the topic.
an in-depth area
Focuses on the detailed and thorough nature of the topic's exploration.
a substantial matter
Highlights the significance and weight of the topic.
a detailed area of study
Specifies the topic as an area requiring careful and thorough study.
a far-reaching subject
Implies that the topic has broad implications and consequences.
a multifaceted issue
Highlights the multiple aspects and angles of the topic.
a large field of inquiry
Presents the topic as a significant area for investigation and research.
FAQs
How can I replace the phrase "an extensive topic" in my writing?
You can use alternatives like "a broad subject", "a comprehensive theme", or "a wide-ranging issue" depending on the context.
What does it mean to describe something as "an extensive topic"?
Describing something as "an extensive topic" implies that it covers a large amount of information, has many different aspects, and requires significant study or discussion to fully understand.
Is it appropriate to use "an extensive topic" in formal writing?
Yes, "an extensive topic" is appropriate for formal writing. However, ensure that your usage accurately reflects the breadth and complexity of the subject you are discussing.
What are some examples of subjects that could be considered "an extensive topic"?
Examples include climate change, artificial intelligence, the history of a particular region, or the theory of relativity. Each of these subjects has numerous facets and a large body of research associated with it.
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
76%
Authority and reliability
4.1/5
Expert rating
Real-world application tested