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
be impossible to differentiate
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "be impossible to differentiate" is correct and usable in written English.
It can be used when discussing situations where two or more items, concepts, or entities cannot be distinguished from one another. Example: "In this experiment, the results were so similar that they seemed to be impossible to differentiate from each other."
✓ Grammatically correct
Science
News & Media
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
11 human-written examples
Such dissenters pointed out that it might be impossible to differentiate between legitimate animal shelters and hellish breeding grounds.
News & Media
The penetration/invasion of OVCAR5 cells within N3F-derived ECMs could be inhibited in the presence of aprotinin, PI, and PRI, while leupeptin, GM6001, or amiloride did not effectively suppress the OVCAR5-induced ECM degradation; i.e., the resultant ECMs appeared to be impossible to differentiate from the ones using untreated controls (Figure S2A).
Science
Based on this, it may be impossible to differentiate one from the other at the bedside.
Science
It would be impossible to differentiate between cases and controls on the basis of the clinical symptoms that prompted admission.
Science
It can be impossible to differentiate between neoplastic involvement of the pleura and reactive pleural effusion or benign pleural thickening.
Science
On unenhanced CT scans, HHs have low attenuation compared with adjacent normal hepatic parenchyma, and when small may be impossible to differentiate from metastases or cysts.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
49 human-written examples
The cast is altogether strong; for once, it is impossible to differentiate between native US speakers and the Brits.
News & Media
Maybe, although it is impossible to differentiate between Federer's levels of intensity because he rarely changes gear.
News & Media
Campaigners say it is impossible to differentiate between mica from legal mines and from the hundreds of small-scale illegal mines in northern Jharkhand and southern Bihar.
News & Media
It is impossible to differentiate between emphysematous transformation and gas-forming infection on CT.
Science
From a narrow perspective, adtech has an abundance of companies that are impossible to differentiate.
News & Media
Expert writing Tips
Best practice
When using "be impossible to differentiate", ensure the context clearly defines the entities being compared. This enhances clarity and avoids ambiguity.
Common error
Avoid using "be impossible to differentiate" when a subtle difference exists. Overstating the lack of distinction can weaken the argument or create a false impression.
Source & Trust
80%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be impossible to differentiate" functions as a predicate adjective, describing a state of indistinguishability between two or more entities. Ludwig examples show it used to express difficulty in distinguishing clinical symptoms or distinguishing source origins.
Frequent in
Science
70%
News & Media
20%
Formal & Business
10%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "be impossible to differentiate" serves to express the lack of discernible differences between entities. Ludwig AI analysis confirms its grammatical correctness and notable usage in science and news media. While alternatives like "be indistinguishable" exist, this specific phrasing maintains a formal and precise tone suitable for technical contexts. Remember to use this phrase judiciously, ensuring that the context accurately reflects the indistinguishability you're describing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
be indistinguishable
Focuses on the lack of any distinguishing characteristics.
be impossible to distinguish
Synonymous, but uses "distinguish" instead of "differentiate".
be unable to tell apart
Emphasizes the inability to perceive differences.
be hard to tell the difference
Highlights the difficulty in noticing distinctions.
be difficult to discriminate
Emphasizes the effort required to perceive differences.
blur the lines between
Uses a more figurative language to suggest lack of distinction.
defy easy categorization
Shifts the focus to the challenge of classification.
lack clear boundaries
Suggests an absence of well-defined separations.
be virtually identical
Emphasizes a high degree of similarity, bordering on indistinguishability.
appear the same
Focuses on the surface-level similarity.
FAQs
What does "be impossible to differentiate" mean?
The phrase "be impossible to differentiate" means that there are no discernible differences between two or more things, making it impossible to tell them apart.
How can I use "be impossible to differentiate" in a sentence?
You can use it to describe situations where distinctions are absent, such as "With the current technology, it can be impossible to differentiate between real and fake videos".
What can I say instead of "be impossible to differentiate"?
You can use alternatives like "be indistinguishable", "be hard to tell apart", or "be unable to tell apart" depending on the context.
Is it more formal to say "be impossible to differentiate" or "be hard to tell apart"?
"Be impossible to differentiate" is generally more formal than "be hard to tell apart". The latter is more suitable for informal conversations.
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
80%
Authority and reliability
4.3/5
Expert rating
Real-world application tested