Proto-Germanic *sūz

→ Danish so (inherited)

→ German Sau (inherited)

→ Faroese súgv (derived)

→ Proto-West Germanic su (inherited(gmw-pro/ang))

→ Alemannic German Sou (inherited)

→ Alemannic German Suu (inherited)

→ Icelandic sýr (inherited)

→ Luxembourgish Sau (inherited)

→ Norwegian Nynorsk su (inherited)

→ Old Norse sýr (inherited)

→ Swedish so (inherited)

→ Vilamovian zaoj (inherited)