Where does “twifald” come from?

twifald (Middle English) comes from Proto-Germanic twifaldaz, from Proto-Germanic twi-, from Proto-Indo-European dwi-, from Proto-Indo-European dwóh₁ — two.

Ancestry of “twifald”, step by step

StepLanguageWordMeaning
1Proto-Germanictwifaldaztwofold; double
2Proto-Germanictwi-two, double
3Proto-Indo-Europeandwi-two; apart, asunder
4Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Indo-European dwi- →Every word from Proto-Germanic twi- →