at fault

Idioms  

1. Responsible for a mistake, trouble, or failure; deserving blame. For example, At least three cars were involved in the accident, so it was hard to determine which driver was at fault, or He kept missing the target and wondered if the sight on his new rifle was at fault. In Britain this usage was formerly considered incorrect but is now acceptable; in America it has been widespread since the mid-1800s. Also see in the wrong.

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Example Sentences

See Examples For:

at fault

Only after that did Pirro bother to review the evidence and conclude the renovation was at fault.

From Salon ● Aug. 7, 2026

I’m hoping you can explain how Medicare works in a situation like this when the other driver is at fault.

From MarketWatch ● Aug. 3, 2026

"To allow future events like this in property owned by the public will be rightly deemed as reprehensible and we will all be at fault."

From BBC ● Jul. 30, 2026

It was revealed that in a majority of those crashes, the e-bike rider was at fault.

From Los Angeles Times ● Jul. 28, 2026

I still thought that I was at fault, I hadn’t been clear enough, that he must not realize he was pressing into my hip bone.

From "The Brightwood Code" by Monica Hesse