payback

noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about payback at Wordnik → Where our words come from →

1. Financial return or reward (especially returns equal to the initial investment).
2. 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