The main objective of this research is to try to expand the current morphological study of Moroccan Arabic (hereafter MA), which is one of the most important disciplines contributing to the linguistic investigation of this language. This research will start by presenting, at a general level, the basic building blocks of morphology, which will then be descriptively correlated with the morphology of MA. Yet, by narrowing its focus, this paper will aim at providing an insight into a more specific aspect of the morphology of MA. That is to say, a whole part of this research will assign itself to present, describe, and interpret a particular morphological characteristic, namely the formation of the passive voice in MA at the level of verbs. One of the inducements that contribute to the selection of this topic was partly due to the relatively few research papers that specifically investigate passivization in this language, despite being both linguistically and socially enticing. Accordingly, one of the objectives of the last part is to present an illustrative morphological description of the different ways that passive voice can take in Moroccan Arabic verbs. This research will also try to present a morpho-syntactic analysis of the impact of passivization on sentences. Ultimately, it will be interesting to bring a comparison between MA and the English Language into the limelight regarding the valency-changing operation and the nominative-accusative alignment of the passive sentences. This monograph pretends neither to complete nor to refute any work that has already been brilliantly investigated, but rather to present and describe systematically what seem to be the most important developments and issues regarding Moroccan Arabic morphology.