Pass the buck
This is when we try to avoid responsibilty by passing it on to someone else. Sometimes, we hope that someone else will take the blame for failure or for a poor decision.
He accepted responsibilty for the failure of the project and refused to pass the buck even though his manager had made the decisions that had led to the failure.
Remember that you won’t do yourself any favours if you simply throw these idioms into conversation during your IELTS interview. You must practice using them appropriately before the exam.