ixpantia.

Headword: 
ixpantia.
Principal English Translation: 

to present, propose, manifest, or give notice about something to others

IPAspelling: 
iːʃpɑntiɑː
Alonso de Molina: 

ixpantia. nitetla. (pret. onitetlaixpanti.) proponer, manifestar, o dar noticia de algun negocio a otros.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 46v. col. 1. Thanks to Joe Campbell for providing the transcription.

ixpantia. niqu. (pret. oniquixpanti.) descubrir algo al amigo.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 46v. col. 1. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

ĪXPANTIĀ vrefl, vt for something to present, manifest itself; to present, reveal, confide something / se presenta (T), proponer, manifestar, o dar noticia de algún negocio a otros (M), descubrir algo al amigo (M), lo revela (T) [(6)Tp.143,217]. See –ĪXPAN. ĪXPANTILIĀ applic. ĪXPANTIĀ ĪXPANTĪLŌ nonact. ĪXPANTIĀ
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 117.

Lockhart’s Nahuatl as Written: 

niqu. to present or show something, put it before someone. takes both direct and indirect obj. Class 3: ōniquīxpantih.
-īxpan, -tia. 222
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 222.

Attestations from sources in Spanish: 

niquixpantilli ynizcatquih auto = les mostre este auto (Tlaxcala, 1562)
Catálogo de documentos escritos en Náhuatl, siglo XVI, vol. I (México, Gobierno del Estado de Tlaxcala, 2013), 20.