Welsh gwely

← Breton gwele (cognate)

← Proto-Celtic *uɸolegyom (inherited)

← Irish golighe (cognate)

← Proto-Indo-European *upo (derived)

← Proto-Indo-European *legʰ- (mention)

← Cornish gweli (cognate)

→ Breton gwele (cognate)

→ Welsh gwelyau (affix)