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 similar
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Substantially similar" is correct and usable in written English.
It is typically used in legal or formal contexts to describe two things that are alike in significant ways, though not identical. Example: "The two contracts are substantially similar, which means they can be treated as having the same terms and conditions."
✓ Grammatically correct
Academia
News & Media
Science
Alternative expressions(6)
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
3. Substantially similar.
Academia
Substantially similar language appeared in the Federal Equity Rules adopted in 1912.
Academia
"Substantially similar?" said Deborah W. Denno, a law professor at Fordham University whose work was cited by the court.
News & Media
"Substantially similar" was first used in last year's California Fair Pay Act, which targeted unequal pay between men and women.
News & Media
1. Substantially similar.
Academia
It only has to be substantially similar.
News & Media
The present code provision is substantially similar.
Academia
Jurors must decide whether the two sequences are substantially similar.
News & Media
The trust must also show the works are substantially similar.
News & Media
The results for different boundary conditions are substantially similar.
It also advised that state and territories "enact legislation with offences the same or substantially similar".
News & Media
Expert writing Tips
Best practice
When comparing items and stating they are "substantially similar", provide data or evidence to support your claim. This strengthens your argument and enhances credibility.
Common error
Avoid using "substantially similar" when there are significant or material differences between the items being compared. Overstating the similarity can mislead your audience and weaken your argument.
Source & Trust
87%
Authority and reliability
4.4/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "substantially similar" primarily functions as an adjectival phrase modifying nouns. It describes the degree to which two or more entities share common characteristics, often used in contexts requiring careful comparison as shown by Ludwig.
Frequent in
Academia
43%
News & Media
38%
Science
19%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "substantially similar" is a common and grammatically sound adjectival phrase used to describe a significant degree of resemblance without implying exact identity. Ludwig AI confirms its correctness and widespread use across various domains, including academia, news, and science. When using this phrase, ensure clarity by defining the criteria for similarity and supporting your claims with evidence. While versatile, avoid overstating similarities when significant differences exist. Alternatives include "materially similar", "essentially alike", and "largely analogous", each offering slight nuances in meaning.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Materially similar
Emphasizes similarity in essential or relevant aspects.
Largely analogous
Highlights the analogy or correspondence between two things.
Essentially alike
Focuses on the fundamental sameness despite possible superficial differences.
Nearly identical
Suggests a very high degree of similarity, approaching complete identity.
Closely related
Implies a strong connection or resemblance.
Broadly comparable
Indicates that items can be compared in a general sense.
Roughly equivalent
Suggests approximate equality or interchangeability.
Much the same
An informal way to express a high degree of similarity.
To all intents and purposes the same
Expresses functional equivalence, especially in a legal or practical context.
For all practical purposes equivalent
Focuses on equivalent results or outcomes in real-world applications.
FAQs
How is "substantially similar" used in legal contexts?
In legal contexts, "substantially similar" often refers to the degree of resemblance required to prove copyright infringement or to determine if two laws are analogous. The exact interpretation can vary depending on the specific legal issue and jurisdiction.
What are some alternatives to saying "substantially similar"?
You can use alternatives like "materially similar", "essentially alike", or "largely analogous" depending on the nuance you want to convey.
In what situations is it appropriate to use the phrase "substantially similar"?
It is appropriate to use "substantially similar" when you want to indicate that two or more things share key characteristics or features without being exactly the same. This is common in legal, technical, and comparative contexts.
What's the difference between "substantially similar" and "identical"?
"Substantially similar" indicates a high degree of resemblance but allows for some differences, while "identical" means exactly the same. If two things are "identical", there are no differences.
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
87%
Authority and reliability
4.4/5
Expert rating
Real-world application tested