pay (a debt) off
Definition: to give someone all the money you owe them so that you are not in debt.
E.g.1: I owe the bank a lot of money, so I’m paying the debt off a little every week.
E.g.2: He won so much money in the card game that he was able to pay off his debts.
This phrasal verb can be separated (E.g. 1)