Irish thar

← Proto-Celtic *ter (inherited)

← Welsh tra (cognate)

← English through (cognate)

← Scottish Gaelic thar (cognate)

← Manx harrish (cognate)

← Proto-Indo-European *terh₂- (root)

← Proto-Indo-European *terh₂- (inherited)

← Latin trans (cognate)

← Dutch door (cognate)

← Old Irish tar (inherited)

← Old Irish dar (mention)

→ Irish tar- (mention)

→ Irish trácht (mention)

→ Scottish Gaelic thar (cognate)

→ Manx harrish (cognate)