to not pay attention or not listen to something or someone (see Molina; example is in the you plural form)
Orthographic Variants:
aquenancommati
Alonso de Molina:
aquenancommati. no lo sentis ni se os da nada dello. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 7r. col. 2. Thanks to Joe Campbell for providing the transcription.