Welsh cyfyng

← Proto-Celtic *komangus (inherited)

← Proto-Indo-European *h₂enǵʰ- (root)

← Proto-Indo-European *ḱóm (inherited)

← Proto-Indo-European *h₂enǵʰ- (mention)

← Old Irish cumung (cognate)

← Middle Welsh kyving (inherited)

→ Welsh cyfyng-gyngor (affix)

→ Irish cúng (cognate)

→ Scottish Gaelic cumhang (cognate)

→ Old Irish cumung (cognate)