Ruʾūs al-Jibāl Arabic in Context: A Proposal for an Expanded Typology of Southeastern Arabian Dialects

Abstract This paper seeks to clearly outline the features that distinguish Ruʾūs al-Jibāl Arabic (also called Šiḥḥī Arabic, Musandam Arabic) spoken on the Omani peninsula from surrounding dialects. Comparison with nearby Arabic varieties yields a few areal features (in segmental phonology) that establish a dialect continuum from the coasts of northern Oman to Musandam. A large number of phonological similarities between Ruʾūs al-Jibāl Arabic and Dhofari Arabic are then documented here for the first time. This robust but discontinuous link re-frames many of the peculiarities of Ruʾūs al-Jibāl Arabic as vestiges of a coastal southern Arabian dialect group. This finding fits a wellknown ancient pattern of northward population movements out of south Arabia, and allows for a more effective delineation of innovations unique to Ruʾūs al-Jibāl . It also offers a direction forward for an expanded framework for the classification of the Arabic dialects of southeastern Arabia, incorporating Oman's peripheries at Dhofar and Musandam.