one who perpetually curses at others, or one who denies something (see Molina)
Orthographic Variants:
tlacentelchiuani
Alonso de Molina:
tlacentelchiuani. el que maldize desta manera, o el que reniega. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 116v. col. 2. Thanks to Joe Campbell for providing the transcription.