Proto-Germanic *þarbō

→ Old English þearf (inherited)

→ Danish tarv (inherited)

→ Estonian tarvis (mention)

→ Faroese tarvur (derived)

→ Faroese tørvur (derived)

→ Proto-Norse ᚢᚦᛡᚱᛡᛒᛡ (inherited)

→ Gothic 𐌸𐌰𐍂𐌱𐌰 (inherited)

→ Icelandic þörf (inherited)

→ Old Norse þǫrf (inherited)

→ Old Saxon tharf (inherited)

→ Old Saxon therva (inherited)