Proto-Germanic *lūs

→ English louse (inherited)

→ Danish lus (inherited)

→ German Laus (inherited)

→ Faroese lús (derived)

→ Westrobothnian lus (inherited)

→ Old Swedish lus (inherited)

→ Icelandic lús (derived)

→ Luxembourgish Laus (inherited)

→ Norwegian Bokmål lus (inherited)

→ German Low German Luus (inherited)

→ Dutch luis (inherited)

→ Norwegian Nynorsk lus (inherited)

→ Old Norse lús (inherited)

→ Swedish lus (inherited)

→ Vilamovian łaojs (inherited)

→ Yiddish לויז (inherited)