On the internal structure of Tashlhiyt Berber triconsonantal roots

International audienceThis paper examines the internal structure of triconsonantal roots in Tashlhiyt Berber. It is proposed that these roots have a binary-branching head complement structure, built upon the sonorant and the segment immediately to its left. Evidence for this structure is provided by the imperfective formation. It is argued that only roots that display such a structure undergo gemination in the imperfective. This allows us to account for a number of forms that are traditionally ascribed to lexical idiosyncrasy, including verbs that are made entirely of obstruents and those where the only sonorant is in the initial position