Old Norse tjara

← Proto-Germanic *terwǭ (inherited)

← Proto-Germanic *terwą (mention)

→ Old English teoru (cognate)

→ Danish tjære (derived)

→ Faroese tjøra (inherited)

→ Icelandic tjara (inherited)

→ Norwegian Bokmål tjære (derived)

→ Norwegian Nynorsk tjære (derived)

→ Norwegian Nynorsk tjuru (mention)

→ Norwegian Nynorsk tjøre (inherited)

→ Swedish tjära (inherited)