Missingsch (German pronunciation: [ˈmɪsɪŋʃ]) is a type of Low-German-coloured dialect or sociolect of German. It is characterised by Low-German-type structures and the presence of numerous loanwords (especially calques) from Low German in High German.
A more technical definition of Missingsch is that it is a type of contact variety, specifically a type of German variety with a Low German (or Low Saxon) substratum. This is the result of linguistic, cultural, educational and political Germanisation of the region that is now Northern Germany. This process of Germanisation began in earnest in the late seventeenth century, after the demise of the Hanseatic League and thus the erosion of its Middle-Saxon-speaking power. Pressures to adopt German and at the same time being held back by insufficient access to formal (by now solely German language) education in the lower social classes led to various stages of transition from Low German to High German. These generally low-prestige language varieties continued to be spoken (rarely written) until the late twentieth century, though some people still continue and promote them now, very often for their supposed entertainment value, typically in comical veins.
Perhaps the best-known remaining domain of Missingsch is that of "Klein Erna jokes"—usually told entirely in Missingsch—in which laconic humour glorifies low-class wit and comments on working class conditions; e.g.
From a linguistic point of view, Missingsch varieties did not become extinct as such. They merely developed into more "cleaned-up"" northern varieties of German, varieties that use numerous Missingsch elements, especially in their casual registers. As such, Missingsch has been influencing the development of Standard German, mostly indirectly by way of northern German dialect contributions. Obvious examples are Low Saxon loanwords such as tschüß 'bye' (cf. Low Saxon: adschüüß, tschüüß). However, most influences are not as clearly noticeable as they involve lexical and idiomatic choices. A case of lexical choice is Sonnabend (cf. Low Saxon Sünnavend, Standard German Samstag) 'Saturday'.