Principal English Translation:
to obey (see Karttunen); to be obedient (see Sahagún)
Attestations from sources in English:
tlatlacamati = [he is] obedient (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 10 -- The People, No. 14, Part 11, 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), 2.
Àmo tlatlācamati = He doesn't obey
Michel Launey, An Introduction to Classical Nahuatl, translated and adapted by Christopher MacKay (Cambridge: Cambridge University Press, 2011), 209.