Proto-Germanic *hwī

→ English why (inherited)

→ Old English hwy (derived)

→ Danish hvi (inherited)

→ German wie (mention)

→ Westrobothnian dy (derived)

→ Icelandic því (derived)

→ Norwegian Nynorsk kvi (inherited)

→ Old Norse því (derived)

→ Old Saxon hwiu (derived)

→ Old Saxon hwi (inherited)

→ Pennsylvania German wie (mention)

→ Swedish vi (inherited)