say it: PAY-bak
payback is a noun meaning "financial return or reward (especially returns equal to the initial investment)". It carries 2 recorded senses.
financial return or reward (especially returns equal to the initial investment)
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”
“For vengeance I would do nothing. This nation is too great to look for mere revenge”
“he swore vengeance on the man who betrayed him”
“the swiftness of divine retribution”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for payback come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.