Related Clues:

• Pile up debt
• Need to pay the bills
• Keep one's balance?
• Be down, in a way
• 'You ___ me!'
• Have yet to settle
• Be on the hook for
• Have an obligation to pay
• Be in arrears to
• Run up a bill
• "To what do I ___ this . . ."
• Have a bill
• "I ___ you one"
• Be in the hole for
• Verb that sounds like a letter