Diglossia

official language of Indonesia

dialect of Middle Aramaic

language variety used by a population in their public discourse (for public purposes); standardized language that has at least one standard variety besides its other varieties; variety that has undergone standardization

thumb|upright=1.3|The station board of Hapur Junction railway station in [[North India demonstrating digraphia of two formal registers, Hindi and Urdu, of a common vernacular, Hindustani, an example of triglossia.]]

set of varieties of the Portuguese language spoken in Brazil

Alemannic dialects spoken in the German-speaking part of Switzerland

form of language used for a particular purpose or in a particular communicative situation

the standardized and literary variety of Arabic used in writing and in most formal speech

tool in dialectology

German as used in Switzerland, mainly as written language

19th and 20th century dispute in Greece about whether the popular language (Demotic) or a cultivated imitation of Ancient Greek (katharevousa) should be official; settled in favour of the former

minor non-prestigious language, most often used in a family and different from the main language of the environment common in the given territory; as a rule, speakers of such languages are bilingual, and this language is their native language.

thumb|A digraphic Gaj's Latin alphabet|Latin/Cyrillic street sign in [[Gaboš, Croatia]] thumb|A digraphic Latin/Jawi script|Jawi street sign in [[Pekanbaru, Indonesia]] In sociolinguistics, digraphia refers to the use of more than one writing system for the same language. Synchronic digraphia is the coexistence of two or more writing systems for the same language, while diachronic digraphia or sequential digraphia is the replacement of one writing system by another for a particular language.

Language controversy in Malta, 19th to mid-20th ct.

dialect continuum of varieties of a creole language between those most and least similar to the superstrate language

Indonesian colloquial language features associated with particular in-group

modifying one's foreign accent towards that of a native speaker

A familect or marriage language is a set of invented words or phrases with meanings understood within members of a family or other small intimate group. Among the pioneers of research on familects is Cynthia Gordon, professor of linguistics at Georgetown University, who discussed the concept in her 2009 book Making Meanings, Creating Family. Familects fall within the intimate register of communication. Familects often gain vocabulary through the words young children create as they learn to talk, when these words are adopted by the family. Familects also gain vocabulary through slips of the ton