Where does “twifel” come from?

twifel (Middle Dutch) comes from Old Dutch twīval, from Proto-Germanic twīflaz, from Proto-Indo-European dwóh₁ — two.

Ancestry of “twifel”, step by step

StepLanguageWordMeaning
1Old Dutchtwīval—
2Proto-Germanictwīflazdoubt
3Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Germanic twīflaz →Every word from Old Dutch twīval →