Welsh mwy

← Proto-Celtic *māyos (inherited)

← Proto-Celtic *māros (mention)

← Irish mó (cognate)

← Scottish Gaelic mò (cognate)

← Proto-Indo-European *meh₁- (derived)

→ Welsh hwy (mention)

→ Welsh mwyaf (affix)

→ Welsh mwyadur (suffix)

→ Irish mó (cognate)

→ Scottish Gaelic mò (cognate)

→ Manx moo (cognate)