never at any time, never at all (see Molina)
niman ayc. enningun tiempo. aduerbio. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 72r. col. 1. Thanks to Joe Campbell for providing the transcription.
(niman strengthens the negative)