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 incompatible
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they are incompatible" is correct and usable in written English.
You can use it when referring to two or more people, objects, or ideas that do not go together or are not able to exist together in the same environment. For example, "The two teams have incompatible goals, so it would be impossible for them to work together on the project."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(19)
they are inconsistent
they are at odds
they are consistent
they are in disagreement
they are opposed
they cannot be relied upon
they are unreliable
they are not trustworthy
they are undependable
they are reliable
they are uniform
they are invariable
they are constant
they are congruent
they are concordant
they are continuous
they are consistently
they are similar
they are inseparable
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 they are incompatible.
News & Media
And they are incompatible.
News & Media
Underneath, however, they are incompatible.
News & Media
"They are incompatible with the skin organ itself," she says.
News & Media
However, they are incompatible because they are physically different.
News & Media
They are incompatible with basic democratic ideals and should be repealed.
News & Media
As per the well-worn phrase, they are "incompatible with the status" of the job.
News & Media
While organic transistors are good enough to power electrophoretic displays, they are incompatible with OLEDs.
News & Media
They are incompatible with any sort of ordered, decent family life.
News & Media
Greens oppose fossil fuels, saying they are "incompatible with our climate-change obligations".
News & Media
But apart from that they are incompatible with content built in Flash.
News & Media
Expert writing Tips
Best practice
When using "they are incompatible", ensure that the subjects being compared are clearly defined to avoid ambiguity. For example, specify "these software systems are incompatible" rather than simply "they are incompatible."
Common error
Avoid relying solely on "incompatible" in technical documentation. Instead, detail the specific reasons for the incompatibility, such as differing protocols or data formats, to provide more actionable information.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they are incompatible" functions as a predicate adjective phrase. It describes the subject ("they") by ascribing a quality of being unable to coexist or function together harmoniously. Ludwig confirms that it's grammatically correct and widely used.
Frequent in
News & Media
35%
Science
35%
Academia
15%
Less common in
Encyclopedias
5%
Formal & Business
5%
Wiki
0%
Ludwig's WRAP-UP
In summary, "they are incompatible" is a grammatically sound and frequently used phrase to express a lack of harmony or functional alignment between entities. Ludwig AI validates its correctness and widespread application across various contexts, from news and media to scientific and academic discourse. The phrase carries a neutral tone, making it suitable for both formal and informal communication. To enhance clarity, specifying the subjects and reasons for incompatibility is recommended. Related phrases include "they do not align" and "they are mutually exclusive", each with subtle differences in emphasis. Remembering to detail the specific causes behind the incompatibility instead of only stating incompatibility will help writers to be more informative.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they are not compatible
A slightly more formal synonym, emphasizing a lack of suitability.
they are irreconcilable
Implies that differences cannot be resolved or brought into agreement.
they are mutually exclusive
Emphasizes that the two cannot both be true or valid.
they are contradictory
Highlights a direct opposition or inconsistency.
they do not align
Focuses on a lack of agreement or correspondence.
they are inconsistent
Focuses on a lack of uniformity or predictability.
they are not in harmony
Suggests a lack of agreement or peaceful coexistence.
they are at odds
Indicates disagreement or conflict.
they clash
Suggests a strong disagreement or conflict.
they are divergent
Highlights a departure from a common point or standard.
FAQs
What does "they are incompatible" mean?
The phrase "they are incompatible" means that two or more things cannot coexist or function together harmoniously. They clash or prevent each other from working effectively.
How to use "they are incompatible" in a sentence?
You can use "they are incompatible" to describe conflicting ideas, systems that cannot work together, or people with conflicting personalities. For example, "His political views and hers "they are incompatible"."
What can I say instead of "they are incompatible"?
You can use alternatives like "they are not compatible", "they are mutually exclusive", or "they clash" depending on the specific context.
Which is correct, "they are incompatible" or "they are uncompatible"?
"They are incompatible" is the correct and standard phrasing. "Uncompatible" is not a recognized word in English.
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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
4.5/5
Expert rating
Real-world application tested