Katharevousa (, , literally "purifying ") is a conservative form of the Modern Greek language conceived in the late 18th century as a compromise between Ancient Greek and the contemporary vernacular, Demotic Greek. Originally, it was widely used for both literary and official purposes, though sparingly in daily language. In the 20th century, it was increasingly adopted for official and formal purposes, until minister of education Georgios Rallis made Demotic Greek the official language of Greece in 1976, and in 1982 Prime Minister Andreas Papandreou abolished the polytonic system of writing for both Demotic and Katharevousa.