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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
this subject
Grammar usage guide and real-world examplesUSAGE SUMMARY
"this subject" is a correct and usable phrase in written English.
It is often used to refer to a specific subject or topic being discussed in a sentence or paragraph. Example: This subject is quite complex, and it will require further study to fully understand it.
✓ Grammatically correct
News & Media
Science
Wiki
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
I love this subject!
News & Media
And why this subject?
News & Media
"This subject is quite clear".
News & Media
This subject is lucky.
News & Media
What drew you to this subject?
News & Media
They didn't care about this subject.
News & Media
This subject was once pretty straightforward.
News & Media
Some panelists took on this subject provocatively.
News & Media
Cranach dealt several times with this subject.
News & Media
That principle applies to this subject, too.
News & Media
Jon is fired up by this subject.
News & Media
Expert writing Tips
Best practice
Use "this subject" when you want to refer back to a specific topic that has already been clearly introduced and defined within the immediate context. Avoid using it when the subject is ambiguous or undefined.
Common error
While grammatically sound, overusing "this subject" can make your writing sound repetitive. Vary your phrasing by using synonyms like "this topic", "the matter at hand", or more specific nouns to enhance clarity and flow.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this subject" functions as a demonstrative determiner followed by a noun. It serves to identify a specific topic under consideration. Ludwig AI confirms its grammatical correctness and common usage.
Frequent in
News & Media
42%
Science
27%
Wiki
14%
Less common in
Formal & Business
6%
Academia
6%
Reference
5%
Ludwig's WRAP-UP
In summary, "this subject" is a grammatically sound and frequently used phrase for referring to a specific topic in a discussion, according to Ludwig AI. Its neutral tone makes it appropriate for various contexts, including news, science, and general conversation. While incredibly common, varying your phrasing with synonyms like "this topic" or "the matter at hand" can enhance the overall clarity and impact of your writing. Examples from reputable sources such as The New York Times and The Guardian demonstrate its widespread applicability.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
this topic
Replaces "subject" with a synonym, maintaining the same demonstrative pronoun.
this issue
Substitutes "subject" with "issue", focusing on a matter of concern or debate.
this matter
Uses "matter" instead of "subject", indicating a point of discussion or concern.
the subject at hand
Adds "at hand" to emphasize the current topic of discussion.
the topic in question
Replaces "this" with "the" and uses "in question" to specify the topic being discussed.
the present subject
Replaces "this" with "the present", emphasizing the current nature of the subject.
the current topic
Similar to "this topic" but adds a sense of immediacy.
this area
Uses "area" as a broader term to refer to a field or domain of discussion.
the item under discussion
A more formal way of referring to the subject being discussed.
the theme
Emphasizes the central idea or motif being discussed, rather than just the topic.
FAQs
How can I use "this subject" in a sentence?
You can use "this subject" to refer to a previously mentioned topic, as in "This subject is quite clear" or "They didn't care about this subject".
What are some alternatives to "this subject"?
Alternatives include "this topic", "this issue", or "this matter" depending on the context.
When is it appropriate to use "this subject" in writing?
It's appropriate when you need to refer to a specific topic that has already been introduced and is clear to the reader. Avoid using it if the topic is vague or ambiguous.
Is "this subject" formal or informal?
"This subject" is generally considered neutral and can be used in both formal and informal contexts. However, more formal alternatives like "the matter at hand" might be preferred in highly academic or professional settings.
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested