to go unnoticed (see Molina; example is given in the first person)
Alonso de Molina:
aquen nicmattica. estar desapercebido y descuydado. 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.