mochachamahuani.

Headword: 
mochachamahuani.
Orthographic Variants: 
mochachamauani
IPAspelling: 
motʃɑhtʃɑmɑːwɑni
Alonso de Molina: 

mochachamauani. el que se jacta y alaba.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 57v. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

MOCHAHCHAMĀHUANI someone arrogant and self-important / el que se jacta y alaba (M), arrogante, orgulloso (T) [|i)Tp.148j. This is specifically non-first person. Presumably it could also take first person prefixes. See CHAMĀHU(A).
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 150.