←
Old English fyrh (inherited)
←
Old English furh (mention)
←
Middle English firre (inherited)
←
Proto-Germanic *furhō (inherited)
←
Proto-West Germanic *furhu (inherited)
←
Proto-Indo-European *perkʷ- (root)
←
Proto-Indo-European *pérkʷus (mention)
←
Italian porca (mention)
←
Low German Fuhr (cognate)
←
Old Norse fýri (derived)
←
Punjabi ਪਰਗਾਇ (cognate)
→
Icelandic fura (cognate)