←
Old English nafola (inherited)
←
Middle English navel (inherited)
←
Middle English navele (mention)
←
West Frisian nâle (cognate)
←
Proto-Germanic *nabalô (inherited)
←
Proto-West Germanic *nabulō (inherited)
←
Proto-Indo-European *h₃nobʰ- (mention)
→
Old Prussian nabis (cognate)
→
Sanskrit नाभि (cognate)