See an image that represents chichi in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).
quinechicozque yn chichime = [he ordered that] the dogs be rounded up
Here in This Year: Seventeenth-Century Nahuatl Annals of the Tlaxcala-Puebla Valley, ed. and transl. Camilla Townsend, with an essay by James Lockhart (Stanford: Stanford University Press, 2010), 134–135.
Teizolo, tecatzauh. Inin tlatolli: itechpa mitoa: in amo qualli nemiliztli, azo tlatoltica: mitoaya: intla aca pilli, anozo tecutli in zan iliuiz tlatoa, in iuhqui chichi. = Something that mars and soils people. This was said about a way of living or speaking that was wrong. It was said if some noble or lord spoke rashly or snapped at people savagely like a dog.
Thelma D. Sullivan, "Nahuatl Proverbs, Conundrums, and Metaphors, Collected by Sahagún," Estudios de Cultura Náhuatl 4 (1963), 174–175.
This is an example of a suffixless noun (no -tl, -tli, or -in ending).
Michel Launey, An Introduction to Classical Nahuatl, translated and adapted by Christopher MacKay (Cambridge: Cambridge University Press, 2011), 232.
amo iuhquj tichichi, ticquativetziz, ticquetzontivetziz in tlalticpacaiotl = thou art not to devour, to gulp down the carnal life as if thou wert a dog (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 6 -- Rhetoric and Moral Philosophy, No. 14, Part 7, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 116.