pecado.

(a loanword from Spanish)

Headword: 
pecado.
Principal English Translation: 

sin (a loanword from Spanish)
Louise M. Burkhart, Before Guadalupe: The Virgin Mary in Early Colonial Nahuatl Literature, Institute for Mesoamerican Studies Monograph 13 (Albany: University at Albany, 2001), 13.

Attestations from sources in English: 

canel ynemactzi omuchiuh, ynic atle ytetzinco aciz, in peccado orginal, quitoznequi. Tlatlaculpeuhcayutl = truly it became her gift that ‘original sin,’ which means the beginning of sin, did not reach her (late sixteenth century, Central Mexico)
Louise M. Burkhart, Before Guadalupe: The Virgin Mary in Early Colonial Nahuatl Literature, Institute for Mesoamerican Studies Monograph 13 (Albany: University at Albany, 2001), 13.