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
what is substantial
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "what is substantial" is correct and usable in written English.
It can be used when inquiring about the significance or importance of something. Example: "In this discussion, we need to focus on what is substantial to our project's success."
✓ Grammatically correct
Science
News & Media
Encyclopedias
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
A common guideline for authorship is that one must have substantially contributed to the development of the paper but what is substantial?
Science & Research
Many metaphysicians have relied, in this connection, on the internally related notions of substance, quality, and relation; they have argued that only what is substantial truly exists, although every substance has qualities and stands in relation to other substances.
Encyclopedias
Sequence analysis is at present opening a second principal dimension beyond the databases of species-specific prototype DNA sequences ("the" human genome sequence vs. "the" mouse genome sequence, etc).: In addition to what all creatures of a species have in common, we tackle the problem of what is substantial in the genetic diversity among the members of a population.
Science & Research
Hegel claims that works of "true humour," such as Laurence Sterne's Tristram Shandy (1759), succeed in making "what is substantial emerge out of contingency".
Science
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
But courts must say what is a substantial burden legally.
News & Media
What is a substantial criminal record for the purposes of this legislation?
News & Media
Only the believer can say what is a substantial burden religiously.
News & Media
But on legislation affecting an entire industry, states let the lawmakers decide what is a substantial interest.
News & Media
First, they say that only they can say what is a substantial burden on their exercise of religion; the courts must take their word for it.
News & Media
Defining what is of "substantial public interest" may be the tricky part, as anyone who has tried to avoid fees charged by government agencies responding to Freedom of Information Act requests has found.
News & Media
53 Additionally, quantifying what is often substantial uncertainty in parameter values and accounting for it in strategy evaluations represents a more rational approach than one based only on point estimates for parameter values.
Science
Expert writing Tips
Best practice
When using "what is substantial", ensure the context clearly defines the criteria for substance or significance. This avoids ambiguity and strengthens your argument.
Common error
Avoid using "what is substantial" without providing specific examples or quantifiable measures. Vague language weakens the impact of your statement. Instead, provide clear criteria or metrics to support your claim about the substance of something.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "what is substantial" primarily functions as an interrogative phrase. It introduces a question seeking to define or identify the significant aspects of a particular subject. As Ludwig AI confirms, it is grammatically correct and usable.
Frequent in
Science
30%
News & Media
30%
Academia
20%
Less common in
Encyclopedias
10%
Formal & Business
5%
Reference
5%
Ludwig's WRAP-UP
The phrase "what is substantial" serves as an inquiry into the core essence or significant aspects of a subject. Ludwig AI analysis validates its grammatical correctness and usability across various writing contexts. Predominantly, it is used in science, news media and academic discourse to prompt deeper analysis and clarify the fundamental elements. For enhanced clarity in writing, always define criteria or provide examples of substance. Alternatives to "what is substantial" include phrases such as "what constitutes substance" or "what represents a significant amount", offering versatility in expression while maintaining semantic integrity. Given its role in prompting critical analysis, mastering the appropriate usage of "what is substantial" is essential for effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
what constitutes substance
Replaces "substantial" with a more formal synonym and focuses on defining the core element.
what represents a significant amount
Rephrases "substantial" in terms of quantity or magnitude.
what comprises the essence
Focuses on the fundamental nature of something being considered substantial.
what embodies importance
Highlights the importance aspect of being substantial.
what is considered meaningful
Changes the focus to the perceived meaning or value.
what is of considerable size
Emphasizes the size or extent aspect of "substantial".
what carries weight
Uses a metaphorical expression for importance or influence.
what is truly fundamental
Highlights the fundamental or basic nature of the substance.
what makes a considerable impact
Focuses on the impact or effect of something being substantial.
what is truly valuable
Shifts the focus to the inherent value of the substance.
FAQs
How can I use "what is substantial" in a sentence?
You can use "what is substantial" to inquire about the significance or importance of something in a given context. For example, "In this discussion, we need to focus on "what is substantial" to our project's success."
What are some alternatives to saying "what is substantial"?
Alternatives include "what is significant", "what is meaningful", or "what constitutes substance", depending on the specific context.
Which is correct: "what is substantial" or "that is substantial"?
Both phrases are grammatically correct, but they have different meanings. "What is substantial" is used to ask about the substance or importance of something, whereas "that is substantial" is a statement affirming that something possesses substance or importance.
How do I determine "what is substantial" in a research context?
In a research context, determining "what is substantial" often involves establishing clear criteria for evaluating the significance of findings, data, or contributions. This may include considering statistical significance, practical implications, or theoretical contributions.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested