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
substantially alter
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "substantially alter" is correct and usable in written English.
It can be used when discussing significant changes or modifications to something, such as a document, plan, or situation. Example: "The new regulations will substantially alter the way businesses operate in the industry."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
59 human-written examples
Livestock can substantially alter plant communities.
Encyclopedias
Peering into this void could substantially alter the scope of historic preservation itself.
News & Media
The peripheral aspects and presentation techniques do not substantially alter the main theme.
News & Media
Finally, he admitted, the mistakes did not substantially alter the initial tally.
News & Media
She buys in bulk, and metal wholesalers don't substantially alter their prices when the market shifts.
News & Media
The ability to substantially alter the basic structure of life is the real revolution.
News & Media
Because of the building's historic designation, Mr. Tankel could not substantially alter the bank's exterior.
News & Media
"We can very substantially alter the course of the epidemic if we scale up interventions rapidly and aggressively".
News & Media
Diet may substantially alter prostate cancer initiation and progression.
Science
Glutamic acid was found to substantially alter the biomass of Monascus M1.
Science
Delays for either the train or highway vehicles did not substantially alter the key findings.
Science
Expert writing Tips
Best practice
When using "substantially alter", ensure the context clearly indicates what is being changed and the degree of the alteration. Use it to emphasize the importance or significance of the change.
Common error
Avoid using "substantially alter" when the change is minor or superficial. This phrase implies a significant transformation, so ensure the degree of change warrants such strong language.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "substantially alter" functions as a verb phrase, indicating a significant change or modification. Ludwig AI confirms its proper usage across various contexts.
Frequent in
Science
50%
News & Media
40%
Formal & Business
10%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "substantially alter" is a versatile and frequently used expression that indicates a significant change or modification. Ludwig AI's analysis confirms its grammatical correctness and widespread applicability across various domains, including Science, News & Media, and Formal & Business settings. While alternatives like "significantly modify" or "greatly change" exist, "substantially alter" remains a robust choice for emphasizing the importance of a transformation. Remember to use it judiciously, ensuring that the context warrants the implication of a major change.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
significantly modify
Replaces "alter" with "modify" and "substantially" with "significantly", emphasizing the degree of change.
greatly change
Uses "change" instead of "alter" and "greatly" for "substantially", focusing on the resulting transformation.
considerably transform
Employs "transform" to highlight a more dramatic change and "considerably" as a substitute for "substantially".
markedly revise
Replaces "alter" with "revise", indicating a careful change or correction, with "markedly" stressing the degree.
fundamentally reshape
Suggests a change to the core structure using "reshape", with "fundamentally" emphasizing the basic level of alteration.
noticeably adjust
Emphasizes a visible change using "noticeably" and a correction using "adjust", rather than a complete transformation.
appreciably affect
Shifts focus to the impact of the change rather than the change itself, using "affect" and "appreciably".
extensively remodel
Highlights a thorough reconstruction using "remodel", with "extensively" indicating the scope of the changes.
majorly impact
Uses simpler terms to convey a significant influence, with "majorly" emphasizing the extent of the impact.
largely influence
Focuses on the influence a change has, rather than the change itself, using "largely" to denote a significant effect.
FAQs
What does "substantially alter" mean?
The phrase "substantially alter" means to change something to a considerable or significant degree. It implies that the change is not minor but has a major impact or effect.
What are some alternatives to "substantially alter"?
You can use alternatives like "significantly modify", "greatly change", or "considerably transform" depending on the context.
Is it correct to say "slightly alter"?
While grammatically correct, "slightly alter" suggests a minor change. If the change is significant, "substantially alter" is more appropriate. For minor changes, consider alternatives like "slightly adjust" or "marginally modify".
How can I use "substantially alter" in a sentence?
For example: "The new evidence could "substantially alter" the outcome of the trial" or "Diet may "substantially alter" prostate cancer initiation and progression".
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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested