tlatoltia.

Headword: 
tlatoltia.
Principal English Translation: 

to speak for someone

IPAspelling: 
tɬɑhtoːltiɑː
Alonso de Molina: 

tlatoltia. nite. (pret. onitetlatolti.) hazer hablar a otro, o tomar el dicho al reo, o al testigo, o darle tormento para que confiesse la verdad.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 141v. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

TLAHTŌLTIĀ vrefl, vt to intercede, to speak in favor of someone; to cause someone to talk or confess, to interrogate someone, to read something / hablar, interceder por alguien (K), hacer hablar a otro, o tomar el dicho al reo o al testigo, o darle tormento para que confiese la verdad (M), lo lee (T). caus. TLAHTOĀ.TLAHTŌLTILIĀ applic. TLAHTŌLTIĀ.TLAHTŌLTĪLŌ nonact. TLAHTŌLTIĀ.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 267.

Attestations from sources in English: 

Me topan ximotlatolti in titlatlacohuanime = May you speak for use sinners (early sixteenth century, Central Mexico)
Louise M. Burkhart, Before Guadalupe: The Virgin Mary in Early Colonial Nahuatl Literature, Institute for Mesoamerican Studies Monograph 13 (Albany: University at Albany, 2001), 117.

themes: 
Speech, Speaking, Oral Tradition