Where does “fájj” come from?

fájj (Hungarian) comes from Hungarian fáj, from Hungarian fiú — boy; son; boyfriend.

Ancestry of “fájj”, step by step

StepLanguageWordMeaning
1Hungarianfájto hurt, ache; to cost something
2Hungarianfiúboy; son; boyfriend
Every word from Hungarian fiúEvery word from Hungarian fáj