Spirantisation in morphologically driven phonology The causative in Bemba

The causative suffix in Bantu is renowned for assimilations that result in spirantisations of stem final consonants thereby resulting in some change to the shape of the causativised verbal base. Departing from a cyclic analysis I shall claim that the causative suffix has two alternating shapes whose spirantisation effects can be captured by a strictly non-cyclic approach with reference to nonanalytic and analytic morphology and its interaction with phonology. I therefore assume that changes in the verbal base follow from phonological conditions that apply in the language in specified phonological contexts.