Obecná čeština (lit. Common Czech; henceforth CC) is a nonstandard and uncodified variety of Czech used in everyday communication with the potential to be a nationwide koine or vernacular for a wide range of informal and semiformal situations. The term CC is said to be derived from Hermann Paul’s Gemeinsprache (Sgall et al. 1992: 266), but it can be used to denote any informal spoken variety of Czech (cf. “Hovorová čeština”).

The status of CC was subject to discussions during the 20th century from both…