Old Irish maith

← Gaulish mat (cognate)

← Proto-Celtic *matis (inherited)

← Welsh mad (cognate)

← Proto-Indo-European *meh₂- (root)

← Proto-Indo-European *meh₂tis (inherited)

← Proto-Indo-European *meh₂- (mention)

← Old Irish maid (alter)

→ Irish maith (inherited)

→ Scottish Gaelic math (inherited)

→ Scottish Gaelic math (mention)

→ Manx mie (inherited)