Map showing the distribution of major Modern Greek dialect areas. The dialect of Northern Epirus (not listed here) belongs to the southern varieties. |
Map showing important isoglosses between the traditional Modern Greek dialects (c.1900).
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The linguistic varieties of Modern Greek can be classified along two principal dimensions. First, there is a long tradition of sociolectal variation between the natural, popular spoken language on the one hand and archaizing, learned written forms on the other. Second, there is regional variation between dialects. The competition between the popular and the learned registers (see Diglossia), culminated in the struggle between Dimotiki (Demotic Greek) and Katharevousa during the 19th and 20th centuries. As for regional dialects, variation within the bulk of dialects of present-day Greece is not particularly strong, except for a number of outlying, highly divergent dialects spoken by isolated communities.
Ever since the times of Koiné Greek in Hellenistic and Roman antiquity, there was a competition between the naturally evolving spoken forms of Greek on the one hand, and the use of artificially archaic, learned registers on the other. The learned registers employed grammatical and lexical forms in imitation of classical Attic Greek (Atticism). This situation is known in modern linguistics as diglossia.
During the Middle Ages, Greek writing varied along a continuum between extreme forms of the high register very close to Attic, and moderate forms much closer to the spoken Demotic. According to Manolis Triantafyllides, the modern Greek language of the beginning of the 19th century, as used in the demotic poetry of the time, has very few grammatical differences from the vernacular language of the 15th century. During the early Modern Era, a middle-ground variety of moderately archaic written standard Greek emerged in the usage of educated Greeks (such as the Phanariots) and the Greek church; its syntax was essentially Modern Greek. After the Greek War of Independence and the formation of the modern Greek state (1830), a political effort was made to "purify" this form of Greek by bringing it back to resemble classical Attic Greek more closely. The result was Katharevousa (καθαρεύουσα, lit. 'the purifying one'), still a compromise form with basically Modern Greek syntax, but re-lexified with a much larger amount of Ancient Greek words and morphology. Katharevousa was used as an official language in administration, education, the church, journalism, and (until the late 19th century) in literature.