tetlaximaliztli.

Headword: 
tetlaximaliztli.
Principal English Translation: 

adultery

Orthographic Variants: 
tetlaxximaliztli?
IPAspelling: 
teːtɬɑʃiːmɑlistɬi
Alonso de Molina: 

tetlaximaliztli. adulterio.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 110r. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

anozo in tlein tlatlaculli: azo tetlaximaliztli, anozo ichtequiliztli. = Or perhaps someone committed a sin, or adultery.
Thelma D. Sullivan, "Nahuatl Proverbs, Conundrums, and Metaphors, Collected by Sahagún," Estudios de Cultura Náhuatl 4 (1963), 174–175.