Literary style of Modern Greek containing features borrowed from Koine WordNet 3.0 & Open English WordNet

Katharevousa is a conservative form of the Modern Greek language conceived in the late 18th century as both a literary language and a compromise between Ancient Greek and the contemporary vernacular, Demotic Greek. Wikipedia

A form of the Modern Greek language conceived in the early 19th century as a compromise between Ancient Greek and the Demotic Greek of the time Wikipedia Disambiguation

Former prestige form of the Modern Greek language Wikidata

A learned, archaising form of Modern Greek, the artificial Greek language based on Classical Greek, used for formal and official purposes, primarily written but not used for conversation. Legally displaced in Greece in 1976 by Demotic Greek. Wiktionary

Purist variant of Modern Greek. Wiktionary (translation)