Intransitivizing voice in a syntactically ergative language such as Katukina-Kanamari fulfills the need for a promoting device that enables the lower ranked argument, the agent, to access syntactic rules constrained by the hierarchy of grammatical relations subject / object. Functional motivation seems not to be totally absent, but its semantic contribution competes with that of another construction, which could be a hint to some diachronic shift in the grammar of the language. [Disponible : http://qxls.free.fr/QxlsProf/KatAntip.pdf]
