Overdue debt, also known as ARREAR or ARREARS, is a debt that has not been paid on time and is past its due date. It is a financial obligation that has not been fulfilled by the debtor and is considered delinquent. ARREAR is a six-letter word and ARREARS is a seven-letter word used to describe this type of debt. When a debt is overdue, it can have serious consequences for the debtor, including late fees, interest charges, and even legal action.