the ascent of he who goes climbing; or of he who is reaching the top; or of he who is thriving (see Molina)
IPAspelling:
ɑhkokiːsɑlistɬi
Alonso de Molina:
Acoquizaliztli. subida del que va subiendo, o del que seva encumbrando, o del que va medrando. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 2v. col. 2. Thanks to Joe Campbell for providing the transcription.