The phrase "at fault" refers to being responsible or culpable for something that has gone wrong. There are many synonyms for this phrase, including: guilty, blameworthy, accountable, liable, answerable, responsible, at the root of, responsible for, causative, to blame, in the wrong. All these words convey the same meaning and can be used interchangeably with "at fault." It is essential to take accountability when we make mistakes and be responsible for our actions. Using these synonyms can help us communicate effectively while taking ownership of our mistakes and resolving the issues.