to defame someone (see Molina; translation to English here by Stephanie Wood)
Alonso de Molina:
tepan niteteca. (pret. tepan onitetecac.) infamar a otro. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 102r. col. 1. Thanks to Joe Campbell for providing the transcription.