tomorrow or the next day, in a few days, soon (see Molina)
Orthographic Variants:
muztla uiptla
Alonso de Molina:
muztla uiptla. mañana o essotro dia, o vn dia destos, o de aqui a pocos dias. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 062r. col. 2. Thanks to Joe Campbell for providing the transcription.