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
that cannot be
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that cannot be" is correct and usable in written English.
It can be used to express impossibility or something that is not feasible or acceptable in a given context. Example: "There are certain truths in life that cannot be ignored, no matter how hard we try."
✓ Grammatically correct
News & Media
Wiki
Academia
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
"No, that cannot be".
News & Media
But, Deutrom argued, that cannot be proven.
News & Media
"This is something that cannot be ignored.
News & Media
"This is something that cannot be justified.
News & Media
Things that cannot be explained.
News & Media
Treat clothes that cannot be washed.
Wiki
This is something that cannot be taught.
Wiki
That cannot be overemphasized.
News & Media
That cannot be".
News & Media
That cannot be denied.
News & Media
But that cannot be guaranteed.
News & Media
Expert writing Tips
Best practice
Use "that cannot be" to express a firm denial, impossibility, or unacceptability of a situation, idea, or action. Ensure the context clearly supports the strong negative assertion.
Common error
Avoid using "that cannot be" in overly casual conversations where simpler phrases like "that's not it" or "that's wrong" would be more appropriate. The phrase carries a certain weight and formality that may sound unnatural in very informal settings.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that cannot be" serves as a declarative statement expressing impossibility, denial, or unacceptability. As confirmed by Ludwig AI, the phrase is correct and usable in English. Examples in Ludwig show this phrase used to refute claims, express disbelief, or reject ideas.
Frequent in
News & Media
68%
Wiki
12%
Academia
8%
Less common in
Science
4%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "that cannot be" is a versatile and commonly used expression to indicate impossibility, unacceptability, or denial. Ludwig AI confirms its grammatical correctness and usability. Predominantly found in news and media contexts, it also appears in academic and wiki sources. While effective in conveying a strong negative assertion, it's best to avoid overuse in very informal settings where simpler expressions would suffice. Consider alternatives like "that is not possible" or "that is unacceptable" for varied expression.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that is not possible
Replaces "cannot" with "is not possible", emphasizing the lack of possibility.
that is unacceptable
Focuses on the unacceptability of something, rather than its impossibility.
that is out of the question
Indicates something is not worth considering or allowing, more emphatic.
that's simply not an option
Presents something as an unviable choice or alternative.
that is not feasible
Highlights the impracticality or unworkability of something.
that will not do
Suggests something is insufficient or unsatisfactory.
that's just not on
Expresses disapproval and the violation of rules or norms (more informal).
it is not to be
Implies a sense of fate or destiny preventing something from happening.
that is not permitted
Focuses specifically on the lack of permission or authorization.
that's never going to happen
Emphasizes the unlikelihood or impossibility of an event occurring in the future.
FAQs
What does "that cannot be" mean?
The phrase "that cannot be" is used to express impossibility, unacceptability, or strong disagreement with a statement or situation.
When is it appropriate to use "that cannot be"?
It's appropriate to use "that cannot be" when you want to firmly deny something, state that something is impossible, or express that something is unacceptable. The phrase is suitable for formal and semi-formal contexts.
What are some alternatives to "that cannot be"?
Alternatives to "that cannot be" include "that is not possible", "that is unacceptable", or "that is out of the question depending on the context".
Is "that cannot be" formal or informal?
"That cannot be" falls somewhere between formal and neutral. It's generally appropriate for professional, news-related, or academic settings, but it can also appear in everyday conversation. However, it might sound somewhat strong or stiff in very informal contexts.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested