Old Irish cid

← Proto-Celtic *kʷid (inherited)

← Welsh pa (cognate)

← Proto-Indo-European *kʷid (inherited)

← Proto-Indo-European *kʷis (mention)

← Cornish pyth (cognate)

← Latin quid (cognate)

← Latin (mention)

← Old Irish cía (link)

→ Welsh pa (cognate)

→ Irish cad (inherited)

→ Scottish Gaelic dè (mention)

→ Scottish Gaelic ciod (inherited)

→ Manx quoid (inherited)