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
is substantially altered
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is substantially altered" is correct and usable in written English.
It can be used to describe a significant change or modification to something, indicating that the original form has been changed in a major way. Example: "The document is substantially altered from its original version, reflecting the latest updates and revisions."
✓ 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
12 human-written examples
The latter is substantially altered with little of Burges's work remaining, the former complete.
Wiki
Evidence for this is that the embryonic testis transcriptome is substantially altered in males from the F1 through the F3 generations, after F0 generation maternal exposure to vinclozolin [26].
Science
This sequence of events is substantially altered in sgol2 Δ/Δ oocytes.
Science
In dcl2/3/4 triple mutants, the small RNA profile is substantially altered.
Science
In many human cancers, however, the normal DNA methylation profile is substantially altered.
Science
The microcirculation in the lungs of patients with IPF is substantially altered.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
48 human-written examples
(Notman's interior has been substantially altered).
News & Media
Of 164 statements which were substantially altered, 116 were changed to remove criticism of the police.
News & Media
During periods when El Niño is active, weather patterns across the entire Earth are substantially altered.
Encyclopedias
(The house is still standing, but it has been substantially altered by subsequent owners).
News & Media
Only the settling of the large limestone blocks spanning the storefront, and the widened joints between them, give a clue that the building has been substantially altered.
News & Media
Expert writing Tips
Best practice
Use "is substantially altered" to emphasize the magnitude and importance of the change. If the change is minor, consider using weaker alternatives such as "slightly modified".
Common error
Avoid using "is substantially altered" when the change is minor or superficial. Overstating the alteration can mislead the reader and diminish the impact of the statement. Be precise and choose a phrase that accurately reflects the degree of change.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is substantially altered" serves as a descriptive predicate, indicating that a subject has undergone significant modification. Ludwig's examples show it used across different domains, further confirming its grammatical correctness as also stated by Ludwig AI.
Frequent in
Science
50%
News & Media
25%
Wiki
16%
Less common in
Encyclopedias
8%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "is substantially altered" is a grammatically sound and versatile expression used to denote significant change or modification. According to Ludwig AI, it's a correct and usable phrase across diverse writing contexts. Analysis of Ludwig examples reveals that the phrase commonly appears in scientific, news, and encyclopedic contexts, with a register ranging from neutral to formal. Remember to employ this phrase when emphasizing the magnitude of change and ensuring clarity regarding the original and altered states. Alternatives include "is significantly changed" and "is greatly modified", each offering slightly different nuances. Avoid overstating the degree of change, and always choose a phrase that accurately reflects the extent of the alteration.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is significantly changed
Emphasizes the degree of change, focusing on the significance of the alteration.
is greatly modified
Highlights the modification aspect, suggesting a transformative adjustment has occurred.
is extensively revised
Focuses on the revision process, implying a thorough and detailed alteration.
is radically transformed
Suggests a fundamental and dramatic shift from the original state.
has undergone major alteration
Highlights the process of alteration and the scale of the changes.
has been fundamentally reshaped
Emphasizes a complete restructuring or change in form and function.
is dramatically adjusted
Implies a notable and impactful adjustment has been made.
is materially different
Indicates a tangible and important difference compared to the original.
is notably amended
Focuses on the amendment aspect, suggesting a correction or improvement has been made.
is considerably reworked
Emphasizes that a significant amount of effort or labor has been put into modifying it
FAQs
How can I use "is substantially altered" in a sentence?
Use "is substantially altered" to indicate that something has undergone significant change. For example, "The original design "is substantially altered" in the new version."
What are some alternatives to "is substantially altered"?
Alternatives include "is significantly changed", "is greatly modified", or "has undergone major alteration". The best choice depends on the specific nuance you want to convey.
When is it appropriate to use "is substantially altered"?
Use "is substantially altered" when you want to emphasize that a change is significant and impactful. It's suitable for describing changes that have fundamentally affected something's form, function, or nature.
Is there a difference between "is substantially altered" and "is slightly modified"?
Yes. "Is substantially altered" indicates a major change, while "is slightly modified" suggests a minor adjustment. Choose the phrase that accurately reflects the extent of the change you're describing.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested