to be assured of something that is feared (see Molina)
Orthographic Variants:
iyullo motlali
Alonso de Molina:
iyullo motlali. asegurado de alguna cosa que temia. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 37r. col. 1. Thanks to Joe Campbell for providing the transcription.