Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun payback
2 senses of payback
Sense 1
payback -- (financial return or reward (especially returns equal to the initial investment))
=> return, issue, take, takings, proceeds, yield, payoff -- (the income or profit arising from such transactions as the sale of land or other property; "the average return was about 5%")
Sense 2
vengeance, retribution, payback -- (the act of taking revenge (harming someone in retaliation for something harmful that they have done) especially in the next life; "Vengeance is mine; I will repay, saith the Lord"--Romans 12:19; "For vengeance I would do nothing. This nation is too great to look for mere revenge"--James Garfield; "he swore vengeance on the man who betrayed him"; "the swiftness of divine retribution")
=> retaliation, revenge -- (action taken in return for an injury or offense)