uiuixca. ni. (pret. oniuiuixcac.) temblar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 158r. col. 1. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
HUIHUIXCA to tremble, shake / temblar (M) [(3)Tp.110,(3)Zp.58,120,155]. See HUIHUIXOĀ.
HUIHUIXCALŌ nonact. HUIHUIXCA.
HUIHUIXCALTIA caus. HUIHUIXCA. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 89.