ph.
1. 偿清，还清（债务）
If you pay off a debt, you give someone all the money that you owe them.
2. 还清债务；用钱打发
If you pay off someone, you give them the amount of money that you owe them or that they are asking for, so that they will not take action against you or cause you any trouble.
3. 成功；赢利
If an action pays off, it is successful or profitable after a period of time.
4. see also: payoff
1. take vengeance on or get even
e.g. We'll get them!
That'll fix him good!
This time I got him
2. do or give something to somebody in return
e.g. Does she pay you for the work you are doing?
Synonym: paymake upcompensate
3. pay off (loans or promissory notes)
Synonym: redeem
4. pay someone with influence in order to receive a favor
Synonym: buy off
5. yield a profit or result
e.g. His efforts finally paid off
6. eliminate by paying off (debts)
Synonym: liquidate