Mesoamerica was a diverse region with many different indigenous languages and cultures. Some of the major language families and their associated groups include:
* Mayan: The most widely spoken family, with over 20 languages still spoken today. The Mayan language family includes the languages of the ancient Maya civilizations, such as the Yucatec Maya, Kʼicheʼ, and Tzotzil.
* Nahuan: This family includes the languages spoken by the Aztecs (Nahuatl), as well as other groups like the Pipil and the Toltec.
* Oto-Manguean: A large and diverse family with languages like Mixtec, Zapotec, and Mixe.
* Totonacan: Spoken by the Totonac people, who were a powerful group in central Mexico.
* Otomian: The languages of the Otomí and the Pame people.
In addition to these major families, there were many other smaller language families and isolates.
So, instead of thinking about a single language, it's more accurate to say that Mesoamerica was a linguistic melting pot with a rich and complex diversity of languages.