no, it will not be like that; an adverb that negates (see Molina)
Orthographic Variants:
caçamo
Alonso de Molina:
cazamo. que no sera assi. aduerbio. para negar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 11r. col. 1. Thanks to Joe Campbell for providing the transcription.