Old Norse þú

← Proto-Germanic *þū (inherited)

← Proto-Indo-European *túh₂ (inherited)

→ Old English þu (cognate)

→ Danish du (inherited)

→ Faroese tú (derived)

→ Old Danish thu (inherited)

→ Old Swedish þu (inherited)

→ Old High German du (cognate)

→ Icelandic þú (inherited)

→ Icelandic þér (derived)

→ Norwegian Bokmål du (inherited)

→ Norwegian Bokmål due (inherited)

→ Norwegian Bokmål duing (inherited)

→ Norwegian Nynorsk du (inherited)

→ Old Norse þínsligr (affix)

→ Elfdalian du (inherited)

→ Swedish du (inherited)