Scottish Gaelic abhainn

← Proto-Celtic *abū (inherited)

← Welsh afon (cognate)

← Scottish Gaelic abha (mention)

← Proto-Indo-European *h₂ep- (root)

← Proto-Indo-European *h₂ep- (inherited)

← Old Irish aub (inherited)

← Old Irish (mention)

→ English Kelvin (mention)

→ English Girvan (mention)

→ Scottish Gaelic fo-abhainn (affix)

→ Scottish Gaelic leas-abhainn (prefix)