←
Proto-Germanic *kūz (inherited)
←
Middle High German (inherited)
←
Old High German kuo (inherited)
←
Ancient Greek βοῦς (cognate)
←
Proto-Indo-European *gʷṓws (inherited)
←
German Low German Koh (cognate)
→
Cimbrian khua (cognate)
→
Alemannic German Chue (cognate)
→
Luxembourgish Kou (cognate)
→
Pennsylvania German Kuh (cognate)
→
Saterland Frisian Ku (cognate)