Schweizerisches Idiotikon ("the Swiss idioticon", also known as Wörterbuch der schweizerdeutschen Sprache "Dictionary of the Swiss German language") is an ongoing, major project of lexicography of the Swiss German dialects. Publication began in 1881 and is projected to be complete by 2022. 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.