A more thorough explanation:

Definition: When something is due, owing, or unpaid, it means that there is an obligation to pay a debt or claim of right that has not been fulfilled yet. This term is often used in legal documents and is similar to the term "due."

Example: John owes $500 to his landlord for rent that was due on the first of the month. The rent is now considered owing and unpaid.

Explanation: In this example, John has an obligation to pay his rent, but he has not paid it yet. Therefore, the rent is considered owing and unpaid.