the act of holding oneself in great regard as a good person, without actually being good (see Molina)
Alonso de Molina:
neyecnenequiliztli. el acto de tenerse y estimarse alguno por bueno, sin serlo. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 66r. col. 1. Thanks to Joe Campbell for providing the transcription.