Piled up debt is a term used to describe a situation where an individual or organization has accumulated a large amount of debt over time. This debt can be in the form of loans, credit cards, mortgages, and other forms of borrowing. The term 'piled up debt' implies that the debt has been accumulating for some time and has become unmanageable. Owing money to multiple creditors can lead to financial hardship and can have serious consequences if not addressed.