Where does “rhegfeydd” come from?

rhegfeydd (Welsh) comes from Welsh rhegfa, from Welsh rheg, from Welsh rhegi, from Proto-Indo-European preḱ-, from Proto-Indo-European pr̥ḱneh₂.

Ancestry of “rhegfeydd”, step by step

StepLanguageWordMeaning
1Welshrhegfacurse, swearword, profane language
2Welshrhegcurse, swearword; imprecation
3Welshrhegito curse, to swear
4Proto-Indo-Europeanpreḱ-to ask
5Proto-Indo-Europeanpr̥ḱneh₂—
Every word from Proto-Indo-European pr̥ḱneh₂ →Every word from Proto-Indo-European preḱ- →Every word from Welsh rhegi →