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pay someone back
1. . Lit. to return money that was borrowed from a person. You owe me money. When are you going to pay me back? You must pay John back. You have owed him money for a long time. You have to pay back everyone you owe money to.
2. Fig. to get even with someone [for doing something]. I will pay her back for what she said about me. Fred eventually will pay Mike back. He bears grudges for a long time. He intends to pay back everyone who has wronged him!
pay something back (to someone)
to repay someone. I paid the money back to Jerry. Can I pay back the money to George now? Please pay the money back now.
1. Repay a debt or a loan, as in I'll pay you back next month.
2. Also, pay back in someone's own coin. Revenge oneself, repay in kind, as in He thought he could get away with copying my plans, but I'll pay him back in his own coin . This expression refers to repaying a debt in exactly the same currency in which the money had been lent. [c. 1600]
1. To return some amount of money that has been borrowed: Will you pay back the $60 I gave you last month? They finally paid the money back.
2. To repay someone an amount of money: I might not have enough money to pay them back. We need to pay back the bank.
3. To reward or punish someone for something: After all their hard work, the team was paid back with a victory. After they beat us, we paid them back by winning the series.