nahuatilpiani.

Headword: 
nahuatilpiani.
Principal English Translation: 

one who is honest, just, and equitable, an enforcer of the law (and see Molina, who seems to indicate a person who "regulates")

Gran Diccionario Náhuatl, citing A. Wimmer (2004), for nahuatilpiyani, Honnête, juste, équitable, observateur de la loi; https://gdn.iib.unam.mx/diccionario/nahuatilpiyani/56384

Orthographic Variants: 
nauatilpiani, nahuatilpiyani
Alonso de Molina: 

nauatilpiani. persona regular.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 063v. col. 2. v. col. 2. Thanks to Joe Campbell for providing the transcription.