diminishing, or the negligence of something (see Molina)
Orthographic Variants:
itelchiualoca
Alonso de Molina:
itelchiualoca. menoscabo, o menosprecio de algo. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 42v. col. 1. Thanks to Joe Campbell for providing the transcription.