The use of two markedly different varieties of a language in different social situations, such as a formal variety at work and an informal variety at home.
(linguis.) Within a speech community, the use of two varieties of a language having different degrees of prestige, with speakers regularly using each in its appropriate social contexts.
Origin of diglossia
- From Greek diglōssos speaking two languages di- two di–1 glōssa tongue, language
From American Heritage Dictionary of the English Language, 5th Edition
- From the New Latin diglōssia, from the French diglossie, from the Ancient Greek δίγλωσσος (diglōssos, “bilingual") + -ία (-ia) (-ia, whence the French -ie and the English -ia).