iztlacatqui. mentiroso. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 49v. col. 2. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
(I)ZTLACATQUI someone mendacious, a liar / mentiroso (M) [(1)Tp. 133]. See (I)ZTLACAT(I). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 125.