re ‧ pay /rɪˈpeɪ/ BrE AmE verb ( past tense and past participle repaid ) [transitive]
[ Word Family: noun : ↑ pay , ↑ payment , ↑ repayment , ↑ payer , ↑ payee ; verb : ↑ pay , ↑ repay , ↑ underpay ≠ ↑ overpay ; adjective : paid ≠ ↑ unpaid , ↑ underpaid ≠ ↑ overpaid , ↑ payable ]
1 . to pay back money that you have borrowed
repay a loan/debt etc
Your mortgage will be repaid over 25 years.
repay somebody something
I’ll repay you the money you lent me next week.
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In everyday English, people usually say that someone pays money back rather than repays it:
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I'll pay you back the money at the end of the week.
2 . to do something for someone, or give them something, in return for helping you
repay somebody for something
How can we repay him for everything he’s done?
I’d like to buy them something to repay all their kindness.
3 . if something repays your time, effort etc, it is worth the time or effort you have spent