-tepec.

Headword: 
-tepec.
Principal English Translation: 

on the hill or mountain, this locative would be attached to a place name and tell where

Attestations from sources in Spanish: 

Coatepec = lugar del cerro de las serpientes
Chiltepec = lugar del cerro de los chiles
Mazatepec = lugar del cerro de los venados
Rebecca Horn's notes from Nahuatl classes with James Lockhart. Card file being harvested by Stephanie Wood.

See also: 
tepetl.