tzatzati.

Headword: 
tzatzati.
Principal English Translation: 

to go deaf (see Molina and Karttunen)

IPAspelling: 
tsɑtsɑti
Alonso de Molina: 

tzatzati. ni. (pret. onitzatzatic.) ensordecer.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 151v. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

TZATZATI to go deaf / ensordecer (M) This is indirectly attested by its applicative form TZATZATILIĀ and in TZATZA. See TZATZATILIĀ.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 311.