Pay back
Meaning: to pay someone the money that you owe them or to get even with someone
Example: Only borrow money if you're sure you can pay it back. I lent him £10 last month and he still hasn't paid me back. I will pay her back for what she said about me.
Example: Only borrow money if you're sure you can pay it back. I lent him £10 last month and he still hasn't paid me back. I will pay her back for what she said about me.