one who scoffs, reproaches, or curses at people; ill-disposed (see Molina)
IPAspelling:
tɬɑteltʃiːwki
Alonso de Molina:
tlatelchiuhqui. menospreciador desta manera, y sacudido. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 134v. col. 2. Thanks to Joe Campbell for providing the transcription.