Old Irish tarb

← Gaulish taruos (cognate)

← Proto-Celtic *tarwos (inherited)

← Proto-Indo-European *táwros (inherited)

← Latin taurus (cognate)

→ Gaulish taruos (cognate)

→ Faroese tarvur (derived)

→ Faroese tjórur (cognate)

→ Irish tarbh (inherited)

→ Scottish Gaelic tarbh (inherited)

→ Manx tarroo (inherited)

→ Icelandic tarfur (derived)

→ Norwegian Bokmål tyr (cognate)

→ Norwegian Nynorsk tyr (cognate)

→ Old Norse tarfr (borrowed)

→ Old Norse þjórr (cognate)