perhaps, or suddenly and without thinking (see Molina)
Orthographic Variants:
amo yuhca teyollo
Alonso de Molina:
amo yuhca teyollo. acaso, o de improuiso e sin pensar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 5r. col. 2. Thanks to Joe Campbell for providing the transcription.