Summary

Diglossia refers to a situation where two linguistic varieties coexist within a given speech community. One variety, labeled the ‘high variety’, is used in formal domains including education, while the other variety, labeled the ‘low variety’, is used principally in instances of informal extemporaneous communication. The domains of use, however, are not strictly separate and especially so with the increase in electronic modes of communication. This results in what has been described as diglossic code-switching, and the gradual encroaching of, in the case under consideration here, vernacular Arabic upon the domains of use of Standard Arabic.

While the genetic relationship between the two varieties is central in the definition of a classical diglossic situation as in the case of Arabic, the concept of diglossia has often been extended in the literature to cover situations of a functional distribution between languages that are genetically distant, such as with the situation of Spanish and Guaraní in Paraguay.

In North Africa, vernacular Arabic is in a classical diglossic distribution with Standard Arabic, while the Berber languages are often described as existing in a situation of extended diglossia with Arabic. However, distinguishing between diglossia as it exists between the Arabic dialects and Standard Arabic and the situation of bilingualism that involves Arabic, Berber, and European languages provides the best framework for describing the linguistic situation in North Africa. Diglossia is a key element in understanding the mechanisms of the region’s language contact and change as it plays a central role in shaping language attitude, language policy, and language planning.