Schweizerisches Idiotikon

[needs update] Its scope includes the language since the end of the classical Middle High German period (13th century) and as such also represents the historical dictionary of the dialects of German-speaking Switzerland, and is one of the most detailed treatments of the Early Modern High German language in general.

[2] The history of the project began in 1862 with the foundation of a Verein für das Schweizerdeutsche Wörterbuch, led by Friedrich Staub (1826–1896).

From 1896, the project was led by Albert Bachmann (1863–1934), under whose editorship, the scope and depth of the project was greatly expanded; Bachmann endeavored to put the Idiotikon on the level with the other "national dictionary" projects edited in Germanic Europe at the time, the Deutsches Wörterbuch, Woordenboek der Nederlandsche Taal, Oxford English Dictionary and Svenska Akademiens ordbok.

In this sense, the Idiotikon is the "national dictionary" of Alemannic Switzerland.

After Bachmann's death in 1934, the project was led by five editors-in-chief: Otto Gröger (1934–1951), Hans Wanner (1951–1974), Peter Dalcher (1974–1991), Peter Ott (1991–2005), Hans-Peter Schifferle (2005–2019), Hans Bickel (2019–2022) and Christoph Landolt (2022–present).