to look askance at someone or to look at someone from the side
IPAspelling:
iːʃtɬɑpɑlittɑ
Alonso de Molina:
ixtlapalitta. nite. (pret. oniteixtlapalittac.) mirar a otro delado. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 48r. col. 1. Thanks to Joe Campbell for providing the transcription.