Classical Nahuatl metztli

← Proto-Nahuan *meeȼtli (inherited)

← Proto-Uto-Aztecan *mïca (inherited)

→ Classical Nahuatl metztontli (suffix)

→ Northern Puebla Nahuatl metztli (derived)

→ Eastern Huasteca Nahuatl metztli (cognate)

→ Zacatlán-Ahuacatlán-Tepetzintla Nahuatl metztli (derived)

→ Central Nahuatl metztli (derived)

→ Central Nahuatl meztli (derived)