Complete collapse is a term used to describe a situation in which something has failed completely and utterly. It is often used to refer to a situation in which a plan or project has been ruined, or a situation in which a business or organization has gone bankrupt. The term can also be used to describe a situation in which a person or group of people have suffered a great loss or setback. The related term 'DEBACLE' is used to describe a situation in which something has gone wrong in a very public and embarrassing way.