Old Irish cáech

← Proto-Celtic *kaikos (inherited)

← Proto-Indo-European *káykos (inherited)

→ Irish caoch (inherited)

→ Irish caochán (mention)

→ Scottish Gaelic caoch (inherited)

→ Latin caecus (cognate)

→ Serbo-Croatian ciča (cognate)

→ Serbo-Croatian цича (cognate)