to leave someone unprotected by leaving and going somewhere else (see Molina)
Orthographic Variants:
xiccauhteua
Alonso de Molina:
xiccauhteua. nite. (pret. onitexiccauhteuac.) desamparar a otro yendose a otra parte. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 159r. col. 1. Thanks to Joe Campbell for providing the transcription.