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
is at fault
Grammar usage guide and real-world examplesUSAGE SUMMARY
"is at fault" is correct and usable in written English.
You can use it when you want to describe or imply that someone is responsible for something going wrong. For example, "The manager is at fault for not following proper safety protocols."
✓ Grammatically correct
News & Media
Academia
Science
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
53 human-written examples
Someone is at fault.
News & Media
Who is at fault?
News & Media
But who is at fault here?
News & Media
George says competition is at fault.
News & Media
The journalist is at fault.
News & Media
"Human nature is at fault".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
7 human-written examples
Adams was at fault.
News & Media
I am at fault.
News & Media
Both sides are at fault.
News & Media
Who's at fault here?
News & Media
Who is going to be at fault?
News & Media
Expert writing Tips
Best practice
Use "is at fault" when you want to clearly state that someone or something is responsible for an error, problem, or negative outcome. Ensure the context provides sufficient evidence or reason for this attribution.
Common error
Avoid using "is at fault" in situations where responsibility is subjective or shared. Opt for more nuanced language to acknowledge shared responsibility or contributing factors, rather than assigning sole blame.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is at fault" functions as a predicate adjective, attributing blame or responsibility to a subject. As Ludwig AI confirms, it's grammatically sound for pinpointing the source of an error.
Frequent in
News & Media
67%
Academia
17%
Science
16%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "is at fault" is a grammatically correct and frequently used phrase for assigning blame or responsibility. As confirmed by Ludwig AI, it serves to clearly identify the source of an error or problem, with its usage spanning news, academic, and scientific contexts. While versatile, it's best to avoid overuse in subjective scenarios, opting for more nuanced language when responsibility is shared. Its neutral register makes it suitable for a wide range of communication, making it a valuable tool for precise expression.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is responsible
A general and direct way of stating accountability.
is to blame
Similar to "is at fault" but can carry a stronger connotation of censure.
takes the blame
Highlights that someone accepts that they are at fault.
bears responsibility
This alternative suggests a formal obligation to answer for something.
is accountable
Highlights the obligation to justify actions.
is culpable
Implies legal or moral blameworthiness.
is liable
Suggests legal responsibility for damages.
is the reason for
Focuses on causality rather than direct blame.
is the cause of
Pinpoints the origin of a problem or issue.
is the origin of
Highlights the starting point of an issue or problem.
FAQs
How can I use "is at fault" in a sentence?
You can use "is at fault" to assign responsibility for a mistake or problem, as in "The company "is at fault" for the data breach".
What are some alternatives to saying "is at fault"?
Alternatives include "is responsible", "is to blame", or "bears responsibility", depending on the specific nuance you want to convey.
Is it better to use "is at fault" or "is responsible"?
"Is at fault" directly assigns blame, while "is responsible" can simply indicate accountability without necessarily implying wrongdoing. The choice depends on the context and your intention.
Can "is at fault" be used for both people and things?
Yes, "is at fault" can be used for both people and things. For example, "The driver is at fault" or "The faulty wiring "is at fault" for the fire".
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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested