|German-speaking Europe, United States, Canada, Brazil, Argentina, Paraguay, Colonia Tovar|
The High German languages (German: hochdeutsche Mundarten, i.e. High German dialects), or simply High German (Hochdeutsch) – not to be confused with Standard High German which is commonly also called "High German" – comprise the varieties of German spoken south of the Benrath and Uerdingen isoglosses in central and southern Germany, Austria, Liechtenstein, Switzerland, Luxembourg, and eastern Belgium, as well as in neighbouring portions of France (Alsace and northern Lorraine), Italy (South Tyrol), the Czech Republic (Bohemia), and Poland (Upper Silesia). They are also spoken in diasporas in Romania, Russia, Canada, the United States, Brazil, Argentina, Mexico, Chile, and Namibia.
High German is marked by the High German consonant shift, separating it from Low German (Low Saxon) and Low Franconian (including Dutch) within the continental West Germanic dialect continuum.
As a technical term, the "high" in High German is a geographical reference to the group of dialects that forms "High German" (i.e. "Highland" German), out of which developed Standard German, Yiddish and Luxembourgish. It refers to the Central Uplands (Mittelgebirge) and Alpine areas of central and southern Germany; it also includes Luxembourg, Austria, Liechtenstein, and most of Switzerland. This is opposed to Low German, which is spoken in the lowlands and along the flat sea coasts of the North German Plain.
High German in this broader sense can be subdivided into Upper German (Oberdeutsch) and Central or Middle German (Mitteldeutsch, this includes Luxembourgish, which itself is now a standard language).
High German is distinguished from other West Germanic varieties in that it took part in the High German consonant shift (c. AD 500). To see this, compare the following:[page needed]
|English||Low German||Standard High German||Consonant shift|
|pan||Pann||Pfanne||[p] to [p͡f]|
|two||twee||zwei||[t] to [t͡s]|
|make||maken||machen||[k] to [x]|
In the southernmost High Alemannic dialects, there is a further shift: Sack (like English/Low German "sack/Sack") is pronounced [z̥ak͡x] ([k] to [k͡x]).
See also: Theodiscus
Old High German evolved from about 500 AD. Around 1200 the Swabian and East Franconian varieties of Middle High German became dominant as a court and poetry language (Minnesang) under the rule of the House of Hohenstaufen.
The term "High German" as spoken in central and southern Germany (Upper Saxony, Franconia, Swabia, Bavaria) and Austria was first documented in the 15th century.
Gradually driving back Low German variants since the Early modern period, the Early New High German varieties, especially the East Central German of the Luther Bible, formed an important basis for the development of Standard German.
Divisions between subfamilies within Germanic are rarely precisely defined, because most form continuous clines, with adjacent dialects being mutually intelligible and more separated ones not. In particular, there has never been an original "Proto-High German". For this and other reasons, the idea of representing the relationships between West Germanic language forms in a tree diagram at all is controversial among linguists. What follows should be used with care in the light of this caveat.