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 unable
Grammar usage guide and real-world examplesUSAGE SUMMARY
"they are unable" is a correct and usable phrase in written English.
It is typically used to indicate a lack of capability or ability to do something. For example: "They are unable to accept any more applications for the position."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
they are incapable
they cannot
they lack the capacity
they are unwilling
they are absent
they are inadequate
they are ready
they are insufficient
they are unsuccessful
they are unavailable
they are not available
they are devoid
they are vacant
they are scarce
they are gone
they are leave
they are not present
they are present
they are omitted
they are lost
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
"They are unable to run," he mused.
News & Media
They are unable to find it.
News & Media
"They are unable or unwilling to socialize.
News & Media
"They are unable to conduct election campaigns.
News & Media
It also means they are unable to take it.
News & Media
So they are unable to come up with an alternative.
News & Media
They are unable to pass on wealth through inheritance.
News & Media
They even kill fish they are unable to swallow.
News & Media
They then find that they are unable to leave.
News & Media
They feel they are unable to get justice".
News & Media
As a result, they are unable or disinclined to spend.
News & Media
Expert writing Tips
Best practice
When using "they are unable", ensure the context clearly defines who "they" refers to, avoiding ambiguity. For instance, specify "the developers are unable to meet the deadline" instead of just "they are unable".
Common error
Avoid using "they are unable" without a clear antecedent for "they". Unclear references can confuse the reader. Always ensure the subject is explicitly stated or easily inferred from the preceding context.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they are unable" functions as a declarative statement expressing a lack of capacity or ability. As Ludwig examples show, it's used to state that a group or entity lacks the means or power to perform a specific action. Ludwig AI validates its grammatical correctness.
Frequent in
News & Media
38%
Science
44%
Formal & Business
9%
Less common in
Wiki
2%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "they are unable" is a common and grammatically sound expression used to indicate a lack of capability or capacity. Ludwig AI confirms its correct usage, and analysis of real-world examples shows its prevalence across diverse contexts, including news, science, and business. When writing, ensure clear pronoun references and consider more nuanced alternatives like "they are incapable" or "they lack the capacity" depending on the intended meaning. Overall, "they are unable" is a versatile and reliable phrase for expressing limitations.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they are incapable
Replaces "unable" with "incapable", a direct synonym, slightly more formal.
they cannot
Uses the contraction "cannot" instead of "are unable", making it slightly less formal.
they are just not able
Adds "just" for emphasis, conveying a stronger sense of inability.
they lack the capacity
Substitutes "are unable" with a more descriptive phrase emphasizing missing capacity.
they find it impossible
Focuses on the perceived impossibility of the task.
they are prevented from
Similar to "restricted from", but emphasizes active prevention.
they haven't the ability
More formal and emphasizes the absence of the required ability.
they are restricted from
Highlights an external constraint causing the inability.
they are not in a position to
Indicates a lack of suitability or preparedness rather than a direct inability.
it is beyond their power
Emphasizes a lack of control or influence rather than simple inability.
FAQs
How can I use "they are unable" in a sentence?
Use "they are unable" to express a lack of capacity or capability. For example, "Due to the storm, "they are unable" to deliver the packages today."
What are some alternatives to "they are unable"?
You can use alternatives like "they are incapable", "they cannot", or "they lack the capacity" depending on the specific nuance you want to convey.
Is it more formal to say "they are unable" or "they cannot"?
"They are unable" is generally considered more formal than "they cannot". Use ""they are unable"" in formal writing and ""they cannot"" in less formal contexts.
What's the difference between "they are unable" and "they are unwilling"?
"They are unable" means they lack the capacity or means to do something, while "they are unwilling" means they have the capacity but choose not to do it. The difference lies in capability versus choice.
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