oomizahuiliztli.

Headword: 
oomizahuiliztli.
Principal English Translation: 

thinness; or, the process of becoming thin, bony (see Molina)

Orthographic Variants: 
oomizauiliztli
Alonso de Molina: 

oomizauiliztli. enflaquecimiento assi, oflaqueza.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 77v. col. 1. Thanks to Joe Campbell for providing the transcription.