at fault

Definitions

Responsible for a mistake, accident, or wrongdoing.

Deserving of blame for a particular situation or failure.

Examples

The insurance company determined that the other driver was at fault for the accident.

I realized I was at fault for the misunderstanding and decided to apologize immediately.

Synonyms

guilty blameworthy responsible culpable accountable in the wrong

Antonyms

innocent blameless faultless guiltless exonerated in the right