yolpapatztiliztli.

Headword: 
yolpapatztiliztli.
Principal English Translation: 

softness, or tenderness of the heart, or thin and without strength (see Molina)

IPAspelling: 
joːlpɑhpɑːtstilistɬi
Alonso de Molina: 

yolpapatztiliztli. blandura assi.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 41r. col. 2. Thanks to Joe Campbell for providing the transcription.