Ahmad Al-Jallad explores the diagnostic features the languages commonly bundled as Ancient North-Arabian and discusses their relationship with Arabic. Daniel Birnstiel investigates the meaning of the Qur'anic term mubin from a synchronic linguistic perspective. Lutz Edzard discusses various functions of the Arabic accusative and demonstrates how they can be analyzed as marked nominatives from a comparative Afro-Asiatic and Semitic perspective. Phillip Stokes traces the history of the common Arabic dialectal relative marker illi and he adduces evidence suggesting a derivation from the definite article *al followed by a plural demonstrative *'ulay. Janet Watson and Abdullah Musallam al-Mahri look at word stress in Mehri from the perspective of stratal optimality theory and show how the rules determining Mehri word stress may be analyzed as combinations of lexical stress and the interaction of constraints.