one who is unflattering or antisocial (see Molina)
Alonso de Molina:
aontenequini. desfauorecedor, o inconuesable. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 6v. col. 2. Thanks to Joe Campbell for providing the transcription.