←
Middle Dutch ooi (inherited)
←
Middle Dutch ou (mention)
←
West Frisian ei (cognate)
←
Proto-Germanic *awiz (inherited)
←
Proto-West Germanic *awi (inherited)
←
Proto-Indo-European *h₂ówis (derived)
←
Old Dutch *ōi (inherited)
→
Afrikaans ooi (inherited)
→
Alemannic German Au (cognate)