quid pro quo Synonyms

barter swap quid trade lex talionis pay-to-play eye for an eye vengeance restitution switch substitution trade-off tradeoff you scratch my back and I'll scratch yours an eye for an eye and a tooth for a tooth you help me and i will help you scratch my back and i'll scratch yours one hand washes the other one hand washes another one good turn deserves the other equal substitution equal exchange tooth for a tooth substitute satisfaction reward reciprocation interchange indemnity indemnification exchange equivalent consideration compensation change reciprocity recompense revengeance revenge return retribution retaliation requital reprisal reparation redress amends