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
I substantial
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I substantial" is not correct in written English.
It lacks a verb or additional context to convey a complete thought. Example: "I am substantial in my contributions to the project."
⚠ May contain grammatical issues
News & Media
Science
Academia
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
5 human-written examples
In assay (i), substantial peaks indicating protein unfolding or aggregation were detected with many buffers in the temperature range between 20 and 40 °C.
Science & Research
In this paper, we propose a design for an economically efficient, optimized, centralized, multi-lateral, periodic commodity market that addresses explicitly three issues: (i) substantial transportation costs between sellers and buyers; (ii) non-homogeneous, in quality and nature, commodities; (iii) complementary commodities that have to be traded simultaneously.
Thus, the RPDA and RCPA can be viewed as representing two different "philosophies" for using reconfigurable antennas in wireless communications systems: (i) substantial changes in radiation pattern (e.g., RCPA) and (ii) a large number of radiation pattern states (e.g., RPDA).
Specifically, "Authorship credit should be based on (i) substantial contributions to conception and design, acquisition of data, or analysis and interpretation of data; (ii) drafting the article or revising it critically for important intellectual content; and (iii) final approval of the version to be published.
Science & Research
The constellation of (i) substantial contamination of southern African mopane trees by C. neoformans var.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
It contained these words: "There Is Substantial and Credible Information that President Clinton Committed Acts that May Constitute Grounds for an Impeachment".
News & Media
OO Pollution From Canadian Oil Sands Vapor Is Substantial - says a new study.
News & Media
By contrast, when comparing samples corresponding to different stages such as baseline and leukaemia initiation stages (FDCP v. ME-I), substantial numbers of peaks showed altered levels of histone acetylation (Figure 3B).
Science
This 'commodity metabolism' was characterised by: i) A substantial increase in palm oil sales for export since 2003.
Possible, not mutually exclusive explanations for this pattern include: i) a substantial stochasticity in the dispersal/colonisation of the sites.
Science
The second-stage spatial term g(s i ) exhibited substantial complexity in the 1999 2007 Pmodelmodel, using 501.6 df.
Expert writing Tips
Best practice
When aiming to describe yourself as someone with significant influence or qualities, use the grammatically correct phrase "I am substantial" or consider more common alternatives like "I am significant".
Common error
Avoid using the phrase "I substantial" as it lacks a verb and is grammatically incorrect. Always ensure that your sentences have a subject and a verb to convey a complete thought.
Source & Trust
89%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I substantial" is grammatically incomplete, lacking a necessary verb. This violates standard English sentence structure. As Ludwig AI points out, the phrase needs a verb, such as "am", to be grammatically correct.
Frequent in
News & Media
40%
Science
40%
Academia
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "I substantial" is grammatically incorrect because it lacks a verb. As Ludwig AI explains, it's an incomplete thought. Although there are a few examples found across news, science, and academic sources, the usage is inconsistent. To convey the intended meaning, it's best to use grammatically correct alternatives such as "I am substantial" or other similar phrases such as "I am significant". When writing, ensure your sentences include a subject and a verb.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
I am substantial
Corrects the grammar by adding the verb "am", making it a complete sentence that means "I am significant".
I am significant
Replaces "substantial" with the adjective "significant", conveying a similar meaning of importance or consequence.
I am considerable
Uses "considerable" as an alternative to "substantial", suggesting a noteworthy or respectable degree.
I have substance
Employs "substance" as a noun, indicating depth, importance, or a solid foundation.
I am meaningful
Replaces "substantial" with "meaningful", emphasizing the importance or purpose behind one's actions or contributions.
I carry weight
Uses an idiomatic expression meaning to have influence or importance.
I am weighty
Substitutes "substantial" with "weighty," suggesting seriousness and importance.
I am of consequence
Expresses the idea that one's presence or actions have significant effects or results.
I make a difference
Focuses on the impact one has, highlighting that one's actions lead to noticeable changes.
I am impactful
Uses "impactful" to highlight the ability to create a strong effect or impression.
FAQs
How to correct the grammar in the phrase "I substantial"?
The phrase "I substantial" is grammatically incorrect. To correct it, add a verb, such as "am", making it "I am substantial". Alternatives include "I am significant" or "I am considerable".
What can I say instead of "I substantial" to express significance?
Instead of "I substantial", you can use phrases like "I am substantial", "I am significant", or "I am considerable" to convey a similar meaning of importance.
Which is correct, "I substantial" or "I am substantial"?
"I am substantial" is grammatically correct. "I substantial" is missing a verb and is therefore incorrect.
Is "I substantial" ever appropriate in written English?
The phrase "I substantial" is generally not appropriate in formal written English because it lacks a verb. It is grammatically incomplete. However, it might appear in very informal contexts or creative writing for stylistic effect, though this is rare.
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
89%
Authority and reliability
2.8/5
Expert rating
Real-world application tested