Proto-West Germanic *saiwi

→ Old English sæ (inherited)

→ Cimbrian sea (inherited)

→ German See (inherited)

→ German Sylt (derived)

→ North Frisian see (inherited)

→ West Frisian see (inherited)

→ Luxembourgish Séi (inherited)

→ Mòcheno sea (inherited)

→ Dutch zee (inherited)

→ Old Saxon seo (inherited)

→ Saterland Frisian See (inherited)