Concurrent Cognate and Contact-induced Plural Traits in Afro-Asiatic: Amazigh id- and Arabic -at Plurals

Lesser studied Moroccan Amazigh and Arabic plurals are id-plurals and at-plurals, respectively, which include morphologically simple/complex words, items with expressive morphology, and borrowings. These are quite distinct from Afro-Asiatic concatenative and non-concatenative ones. The paper aims first at establishing commonalities between them, specifically focusing on Arabic masculine at-plurals. The further goal is to check whether at-pluralization is cognate to id-pluralization or substratal thereof. The paper claims that the specifics of at-plurals which differ from those of cognate Arabic varieties are the result of contact and are probably a shift-induced interference