reckless, wild; or, tousled and disheveled (see Molina)
Orthographic Variants:
quapupul, cuapupul
Alonso de Molina:
quapupul. desmelenado. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 85r. col. 2. Thanks to Joe Campbell for providing the transcription.