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
they are virtually identical
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they are virtually identical" is correct and usable in written English.
You can use it when comparing two or more items that are very similar or nearly the same in appearance or function. Example: "The two models of the smartphone are virtually identical, making it difficult to choose between them."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(20)
are virtually identical
they are indistinguishable
they are nearly identical
they are essentially the same
they are very similar
they are comparable
they are almost the same
they look great
they look gruesome
they resemble each other
they look clean
they are similar
they bear a resemblance
they look happy
they look similar
she looks happy
he looks happy
there is not so much difference between
the variance between them is minimal
there is practically no distinction
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
6 human-written examples
The two individuals both fit the requirements perfectly, are the same age, went to the same school, and, from the point of view of this job, they are virtually identical.
News & Media
Nevertheless, on the basis of 16S rRNA they are virtually identical and form a monophyletic cluster, with a close phylogenetic affiliation among filamentous cyanobacteria.
Science
As it can be seen in Figure 7, left panel, the general comparison for XR and XL arms indicates that they are virtually identical.
Science
The general consensus on AT- and BM-MSC is that they are virtually identical in cell surface marker profile, gene expression profile, and differentiation potential [ 12].
The asymmetric unit contained two copies of velaglucerase alfa, designated as molecules A and B. The root mean square deviation (RMSD) value between molecules A and B (<0.3 Å) shows that they are virtually identical.
Science
Comparison of the islands in 1106a and 1106b demonstrated that they are virtually identical except for a small internal indel region that is present in 1106a but absent in 1106b.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
They were virtually identical.
News & Media
"Apart from the age differences, they were virtually identical.
News & Media
They're virtually identical, bar the fact that the frontman looks nothing like Two Door's Tintinesque singer, Alex Trimble.
News & Media
Most tellingly — or damningly — when the opening credits of "The Late Late Show" and "Ce Soir Avec Arthur" were played side by side they were virtually identical.
News & Media
Church and state became so closely associated that they were virtually identical, as in the cases of the sacred and secular in preliterate societies.
Encyclopedias
Expert writing Tips
Best practice
Use "they are virtually identical" when you want to emphasize a very high degree of similarity that is practically indistinguishable for a given purpose, but you want to avoid a claim of absolute identity.
Common error
Avoid using "they are virtually identical" when there are significant or relevant differences between the items being compared. Overstating similarity can be misleading or inaccurate.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they are virtually identical" functions as a predicate adjective that describes the subject (they) by asserting a high degree of similarity or near-equivalence. Ludwig confirms its proper use in written English.
Frequent in
Science
50%
News & Media
43%
Encyclopedias
7%
Less common in
Formal & Business
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "they are virtually identical" is a versatile expression used to convey a strong degree of similarity between two or more entities, acknowledging that minor differences might exist but are negligible for practical purposes. Ludwig AI confirms that the phrase is correct and widely used across different contexts. It's most common in science and news media, where precise comparisons are frequent. When writing, it's important to ensure that the comparison is accurate and the degree of similarity is not overstated. Alternatives such as "they are almost identical" or "they are nearly the same" can be used to soften the claim. Remember, this expression is suitable for both formal and informal contexts as confirmed by the Ludwig AI.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they are almost identical
Replaces "virtually" with "almost", softening the degree of similarity.
they are nearly identical
Substitutes "virtually" with "nearly", indicating a slight difference may exist.
they are practically identical
Replaces "virtually" with "practically", focusing on functional equivalence.
they are indistinguishable
Highlights the difficulty in telling them apart.
they are essentially the same
Shifts focus to the core essence being equal, rather than precise details.
they are effectively the same
Focuses on the outcome or result being the same, despite potential differences in process.
they are much alike
Uses a simpler construction, indicating a high degree of similarity without implying perfect equivalence.
they mirror each other
Emphasizes a direct correspondence or reflection of one another.
they are very similar
Indicates a high degree of resemblance but allows for notable differences.
they are comparable
States that a valid comparison can be made, often implying close similarity.
FAQs
How can I use "they are virtually identical" in a sentence?
This phrase is used to express that two or more things are so similar that the differences are negligible for a specific context. For example, "The two candidates' platforms on education "are virtually identical"."
What are some alternatives to "they are virtually identical"?
You can use alternatives like "they are almost identical", "they are nearly the same", or "they are indistinguishable" depending on the context.
Is it appropriate to use "they are virtually identical" in formal writing?
Yes, the phrase is appropriate for formal writing, especially in scientific, technical, or analytical contexts where precise comparison is important. The phrase is well documented by Ludwig AI.
What is the difference between saying "they are identical" and "they are virtually identical"?
Saying "they are identical" implies perfect equivalence in every aspect. Using "they are virtually identical" suggests a very high degree of similarity, acknowledging that minor, perhaps irrelevant, differences may exist. It is a more nuanced and often more accurate way to describe similarity.
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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested