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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
are virtually indistinguishable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are virtually indistinguishable" is correct and usable in written English.
It can be used when comparing two or more items that are so similar that they cannot be easily differentiated. Example: "The two species of birds are virtually indistinguishable to the untrained eye."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(15)
are nearly the same
are almost identical
are practically equivalent
are essentially alike
are much the same
are closely related
bear a close resemblance
are nearly identical
are approximately equally
are roughly equivalent
are practically identical
look extremely similar
appear nearly identical
bear a striking resemblance
are very comparable
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
But in design, the two are virtually indistinguishable.
News & Media
Inside and out, they are virtually indistinguishable from a small suburban tract house.
News & Media
In fact, testing and marketing are virtually indistinguishable from one another.
News & Media
In many countries around the world the challenges are virtually indistinguishable.
News & Media
The two say there is little competition between them, even though their positions are virtually indistinguishable.
News & Media
Apart from 'the National Question', the economic policies of Labour and the SNP are virtually indistinguishable.
News & Media
The juveniles, however, are both light brown patterned with dark, and are virtually indistinguishable in the field.
Academia
To the naked eye, the results are virtually indistinguishable from direct manipulation of the high-resolution image.
In terms of constitutional values, I think that such controls are virtually indistinguishable from the State's ban on promotional advertising.
Academia
Bézier projection exhibits provably optimal convergence and yields projections that are virtually indistinguishable from global L2 projection.
(As a Calatrava retrospective at the Metropolitan Museum of Art reveals, his building models are virtually indistinguishable from his sculptures).
News & Media
Expert writing Tips
Best practice
Use "are virtually indistinguishable" when you want to emphasize that the differences between two or more things are so minimal that they are functionally the same. This phrase adds a layer of precision.
Common error
Avoid using "are virtually indistinguishable" in very informal settings where simpler phrases like "are almost the same" would suffice. Overusing it can make your writing sound unnecessarily formal or pretentious.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are virtually indistinguishable" functions as a predicate adjective, describing the subject by asserting a state of near-identity. Ludwig provides numerous examples where this phrase is used to compare entities, emphasizing their extreme similarity.
Frequent in
News & Media
36%
Science
33%
Academia
8%
Less common in
Encyclopedias
5%
Wiki
3%
Formal & Business
3%
Ludwig's WRAP-UP
The phrase "are virtually indistinguishable" is a common and grammatically correct way to express that two or more things are extremely similar, bordering on identical. As confirmed by Ludwig, its usage spans across diverse contexts, including news, scientific research, and academic writing, demonstrating its versatility and acceptance. While suitable for formal and neutral registers, simpler alternatives may be preferred in casual conversation. To maintain clarity and avoid overuse, it's important to consider the context and audience when employing this phrase.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
are almost identical
Emphasizes the near-perfect similarity, focusing on the identical nature.
are nearly the same
Highlights the minimal difference between the items being compared.
are practically equivalent
Stresses the functional equivalence despite potential minor differences.
are essentially alike
Focuses on the fundamental similarity, downplaying superficial differences.
are much the same
Indicates a high degree of similarity without claiming complete identity.
are closely related
Highlights a strong connection or similarity, often in a broader context.
are mirror images
Implies a perfect reflection or exact correspondence between two things.
bear a close resemblance
Emphasizes the similarity in appearance or characteristics.
can't be told apart
Focuses on the inability to differentiate between the items.
appear as one and the same
Suggests that the items are perceived as a single, unified entity.
FAQs
How can I use "are virtually indistinguishable" in a sentence?
This phrase is used to emphasize that two or more items are so similar that they are hard to tell apart. For example: "The twins' personalities "are virtually indistinguishable"."
What's a simpler alternative to "are virtually indistinguishable"?
Consider using phrases like "are nearly the same" or "are almost identical" for less formal contexts.
Is it appropriate to use "are virtually indistinguishable" in scientific writing?
Yes, this phrase is appropriate for scientific writing when you need to convey a high degree of similarity between experimental results, samples, or other measurable entities. It adds a level of precision suitable for academic contexts.
What is the difference between "are virtually indistinguishable" and "are similar"?
"Are similar" indicates a general resemblance, whereas ""are virtually indistinguishable"" means the differences are so minimal they are practically the same. The latter is a stronger statement of likeness.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested