Irish ith

← Proto-Celtic *ɸiteti (inherited)

← Proto-Celtic (derived)

← Proto-Celtic *ed- (derived)

← Irish duaidh (mention)

← Irish do·fúaid (mention)

← Proto-Indo-European *peyt- (root)

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

← Proto-Indo-European *h₁ed- (derived)

← Old Irish ithid (inherited)

← Old Irish ·íss (inherited)

← Old Irish ·dúaid (inherited)

← Old Irish dí- (mention)

← Old Irish fo- (mention)

→ Irish ithir (mention)