to break or let go of an oath (see Molina; partly a loanword from Spanish, juramento, oath)
Orthographic Variants:
iuramento xinia
Alonso de Molina:
iuramento xinia tito. (pret. otito juramento xinique.) soltar el juramento. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 44v. col. 1. Thanks to Joe Campbell for providing the transcription.