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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
substantial subject
Grammar usage guide and real-world examplesUSAGE SUMMARY
The term "substantial subject" is correct and can be used in written English.
It refers to the main subject of a sentence, which carries the most weight or significance in conveying the overall message. Example: The substantial subject of the novel is the character's journey towards self-discovery.
✓ Grammatically correct
News & Media
Academia
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
8 human-written examples
Young people need to display substantial subject knowledge as part of the examination process.
News & Media
A comparative study of a substantial subject across countries or periods.
Academia
"We had been looking around for a special to do and we wanted a really substantial subject.
News & Media
Even so, were I a reader who had written in on a reasonably substantial subject, then seen no result, I would be wondering, what gives?
News & Media
Not until the late 1960s did the discipline's ideas begin to influence mainstream economics.In this section The law is an ass Three's company Better news in East Asia Latin America seeks shelter Control freaks An electronic bolt from the blue Marsh attacks ReprintsAs the weighty new dictionary amply illustrates, law and economics is now a substantial subject.
News & Media
In the cases of both this and Here We Go, the playwrights are tackling such substantial subject matter – Churchill taking on death, Bartlett dealing with office politics – in texts dense with language and ideas that audiences do not feel shortchanged, especially as the theatres have sensibly reduced ticket prices, the Vic charging £10-£25 £10-£25l and the National pricing Here We Go at £15.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
(iii) The need for consultation, which will be conducted with all practicable speed, with another agency having a substantial interest in the determination of the request or among two or more components of the agency having substantial subject-matter interest therein.
Academia
Plots of headache days at an individual-level revealed substantial subject-specific differences and striking curvatures (Additional file 1: Figure. S1).
"It's somehow considered a lightweight section, and therefore there's a belief that certain substantial subjects should be off limits".
News & Media
Yes, young people live in a world of Facebook "likes" and internet memes and "winning" and "fail" -- it doesn't mean that MTV should once again mirror and perpetuate that kind of lowest-common-denominator anti-thinking in an effort to introduce American kids to one of the most substantial subjects in the world.
News & Media
Labour market slack in the US economy remains substantial, and subject to partial control by monetary policy.
News & Media
Expert writing Tips
Best practice
Use "substantial subject" when you want to emphasize the significant or considerable nature of a topic, issue, or area of study. It conveys that the subject matter is not trivial or superficial.
Common error
Avoid using "substantial subject" in very informal conversations or writing where simpler terms like "important topic" or "key issue" might be more appropriate. The phrase can sound overly formal in casual settings.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "substantial subject" functions as a noun phrase where the adjective "substantial" modifies the noun "subject". It often serves to highlight the significance or importance of the topic being discussed, as confirmed by Ludwig.
Frequent in
News & Media
33%
Academia
33%
Science
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "substantial subject" is grammatically correct and serves to emphasize the importance or weight of a particular topic. Ludwig confirms its validity for use in written English. It's most commonly found in news, academic, and scientific contexts. While not overly frequent, it's a useful phrase for highlighting the significance of a subject matter. When a less formal tone is desired, alternatives like "significant topic" or "important issue" may be more appropriate.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
significant topic
Replaces "substantial" with "significant", emphasizing the importance of the topic.
major theme
Focuses on the thematic aspect, using "major" instead of "substantial".
important area of study
Specifies the context as an academic pursuit, highlighting importance.
considerable matter
Emphasizes the weight or significance of the issue at hand.
noteworthy subject
Highlights the subject's quality of being worthy of attention.
key area
Simplifies the phrase, focusing on the importance of the area.
central issue
Highlights the centrality of the issue being discussed.
primary focus
Indicates that the subject is the main point of attention.
core element
Highlights the subject as a fundamental part of something.
meaningful subject
Emphasizes that the subject has significance and value.
FAQs
How can I use "substantial subject" in a sentence?
You can use "substantial subject" to describe a topic of considerable importance. For example, "The "substantial subject" of the debate was climate change".
What's a good alternative to "substantial subject"?
Alternatives include "significant topic", "major theme", or "important area of study", depending on the context.
Is "substantial subject" formal or informal?
"Substantial subject" leans towards the formal side. In informal settings, simpler phrases might be more suitable.
What makes a subject "substantial"?
A "substantial subject" is one that carries significant weight, importance, or impact. It's a topic that merits serious consideration and detailed exploration.
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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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested