Welsh crys

← Breton krez (cognate)

← Proto-Celtic *krissus (inherited)

← Irish crios (cognate)

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

← Cornish krys (cognate)

← Proto-Slavic *čersъ (cognate)

→ Welsh crysau (affix)

→ Welsh gwregys (cognate)

→ Irish crios (cognate)

→ Scottish Gaelic crios (cognate)