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
substantial source
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "substantial source" is correct and usable in written English.
It can be used when referring to a significant or important origin of information, resources, or materials. Example: "The research paper cites a substantial source that provides valuable insights into the topic."
✓ 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
60 human-written examples
"The workers were really looking to Noche as a substantial source of employment.
News & Media
I can't deny that Hershey's Kisses were a substantial source of happiness in my childhood.
News & Media
She could find no substantial source material to suggest that Boulanger ever actually existed.
News & Media
"Al-Jazeera's ability to influence public opinion throughout the region is a substantial source of leverage for Qatar," he wrote.
News & Media
He said he suspected that the fines were a substantial source of revenue for governments in poor parts of China.
News & Media
Take away paying opportunities and our free galleries will lose a substantial source of income and growth.
News & Media
These "green collar" jobs are manufacturing-heavy and export-driven and represent a substantial source of growth.
News & Media
For its part, Columbia House, with annual revenue around $1.4 billion, has long been a substantial source of cash for Sony and Time Warner.
News & Media
He went on: "Al-Jazeera's ability to influence public opinion throughout the region is a substantial source of leverage for Qatar, one which it is unlikely to relinquish.
News & Media
The coffee not only provides a substantial source of income to the tribe, but has won nods from the Specialty Coffee Association of Europe.
News & Media
The trading became a substantial source of revenue at banks and hedge funds, which vigilantly guard the code underpinning their lucrative trading strategies.
News & Media
Expert writing Tips
Best practice
When using "substantial source", ensure that the source you are referring to is genuinely significant in terms of its impact, quantity, or reliability. Avoid using it for minor or trivial sources.
Common error
Avoid using "substantial source" to describe something that is only a minor or secondary contributor. Overstating the importance can undermine the credibility of your writing.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "substantial source" primarily functions as a noun phrase, acting as a subject complement or object in a sentence. Ludwig AI shows it correctly describes the origin or cause of something significant.
Frequent in
Science
39%
News & Media
38%
Formal & Business
13%
Less common in
Wiki
3%
Social Media
0%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "substantial source" is a grammatically sound and frequently used expression to denote a significant origin or cause. Ludwig AI confirms its correctness and usability across various domains. Predominantly found in science and news media, it maintains a neutral to formal register. When employing this phrase, ensure that the source genuinely warrants such emphasis. Remember that overstating the importance of a source can diminish credibility. Alternatives include "significant origin" or "major contributor", each subtly altering the emphasis. By keeping these considerations in mind, you can effectively incorporate this phrase into your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
significant origin
Replaces "source" with "origin", emphasizing the point of commencement or derivation.
major contributor
Shifts the focus to the idea of contributing significantly to something.
primary resource
Highlights the role of being a fundamental resource for something.
key component
Emphasizes that it's a crucial element that is part of a larger entity or system.
essential element
Indicates that it is indispensable and vital for a specific purpose.
important foundation
Stresses that it serves as a crucial base or groundwork.
notable influence
Switches the focus to the act of influence of something instead of a source.
considerable factor
Focuses on the aspect of being a substantial element impacting an outcome.
valuable asset
Highlights the quality of being a beneficial and prized possession.
dependable provider
Shifts to indicate consistent and reliable supply.
FAQs
How can I use "substantial source" in a sentence?
You can use "substantial source" to indicate a significant origin or cause, as in "The river is a "major source" of irrigation for the region" or "Her experience was a "valuable asset" to the project".
What are some alternatives to "substantial source"?
Alternatives include "significant origin", "major contributor", "primary resource", and "key component", depending on the specific context.
Is there a difference between "substantial source" and "significant source"?
While similar, "substantial source" implies a larger quantity or greater impact compared to "significant source", although they are often interchangeable.
In what contexts is it appropriate to use "substantial source"?
"Substantial source" is appropriate in academic, scientific, news, and business contexts when emphasizing the considerable importance or size of the source being discussed.
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
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested