The official language of Egypt is Arabic, and most Egyptians speak one of several vernacular dialects of that language. As is the case in other Arab countries, the spoken vernacular differs greatly from the literary language. Modern literary Arabic (often called Modern Standard Arabic or al-fu???, “clear” Arabic), which developed out of Classical, or medieval, Arabic, is learned only in school and is the lingua franca of educated persons throughout the Arab world. The grammar and syntax of the literary form of the language have remained substantially unchanged since the 7th century, but in other ways it has transformed in recent centuries. The modern forms of style, word sequence, and phraseology are simpler and more flexible than in Classical Arabic and are often directly derivative of English or French.
Alongside the written language, there exist various regional vernaculars and dialects of Arabic (these are termed collectively al-?ammiyyah, “common” Arabic), which differ widely from the literary variant as well as from one another. Within the amorphous grouping referred to as Egyptian colloquial, a number of separate vernacular groups can be discerned, each fairly homogeneous but with further strata of variation within the group. (Variations from one locale to another are often subtle but at other times are quite profound.) One of these is the dialect of the Bedouin of the Eastern Desert and of the Sinai Peninsula; the Bedouin of the Western Desert constitute a separate dialect group. Upper Egypt has its own vernacular, markedly different from that of Cairo. The Cairo dialect is used, with variations, throughout the towns of the delta, but rural people have their own vernacular. Direct contact with foreigners over a long period has led to the incorporation of many loanwords into Cairene colloquial Arabic. (Cairo’s prominence as a centre of the Arab film industry has also ensured that its dialect is widely understood throughout the Arab world.) The long contact with foreigners and the existence of foreign-language schools also explain the polyglot character of Egyptian society. Most educated Egyptians are fluent in English or French or both, in addition to Arabic.
There are also other minor linguistic groups. The Beja of the southern section of the Eastern Desert use an Afro-Asiatic language of the Cushitic branch known as To Bedawi (though some speak Tigre and many use Arabic). At Siwa Oasis in the Western Desert there are groups whose language is related (but not too closely) to the Berber languages of the Afro-Asiatic family. Nubians speak Eastern Sudanic languages that, although technically of the Nilo-Saharan language family, contain some Cushitic features. There are other minority linguistic groups, notably Greek, Italian, and Armenian, although they are much smaller than they once were.
At the time of the Islamic conquest, the Coptic language, a latter incarnation of the ancient Egyptian language, was the medium of both religious and everyday life for the mass of the population. By the 12th century, however, Arabic had come into common use even among Christian Copts, whose former tongue continued only as a liturgical language for the Coptic Orthodox Church.