Diglossia is a sociolinguistic arrangement in which two varieties of the same language coexist within a single speech community, each assigned to distinct social functions: a high variety (H) used in formal contexts such as education, literature, and religion, and a low variety (L) used in everyday conversation and informal settings. The boundary between H and L is maintained through social convention and institutional practice, not through mutual intelligibility — both varieties are typically mutually intelligible speakers. The persistence mechanism is institutional reinforcement: education systems, religious practice, and social norms dictate which variety is appropriate in which context, and speakers are socialized from childhood to recognize and maintain this division. The map does not describe natural language ability but rather the human-made social ordering of linguistic varieties into a functional hierarchy. [formal: diglossia | substrate: behavior | horizon: a life | explicit: yes | epoch: 0.38]
Accepted ontology entry
diglossia
Diglossia is a sociolinguistic arrangement in which two varieties of the same language coexist within a single speech community, each assigned to distinct social functions: a high variety (H) used in formal contexts such as education, lite…
Definition
Why it is in scope
A human-made sociolinguistic concept describing a stable speech community where two distinct language varieties coexist with strictly divided social functions — a high (H) variety for formal contexts and a low (L) variety for everyday communication. Coined by Charles Ferguson in 1959 as an analytical framework, it persists through linguistic description, teaching, and sociolinguistic research.
Names and aliases
- diglossiaen · CANONICAL
Relations from this entry
- cmr784qq1000ks126wltnuaxhDEPENDS_ON →
Constitutive: diglossia is a sociolinguistic state where two languages serve distinct social functions. Remove language and the concept cannot operate — diglossia is fundamentally a language-bound phenomenon.
- cmrhjgg5901ss8aehos99jymeDEPENDS_ON →
Removal test: diglossia is a social arrangement where two language varieties serve different functions based on socially established rules. Remove those conventions about which variety to use where, and diglossia as an operating social pattern collapses. This is object-level (the conventions are part of diglossia's mechanism), not meta-level (Law 2b). Epoch test: convention=0.15, diglossia=0.15 — convention is equally or more foundational.
- language-varietyDEPENDS_ON →
Law 8b removal test on the defined senses. diglossia's accepted definition: 'a sociolinguistic arrangement in which two varieties of the same language coexist within a single speech community, each assigned to distinct social functions (H and L).' language-variety's accepted definition carves the genus of those constituents: 'a form counts as a variety when it is internally rule-governed... distinguished... by the population or situation that characterizes it.' Remove Y now — no rule-governed linguistic forms distinguished by population or situation exist — and the two varieties that constitute every diglossia are gone; the H/L arrangement has nothing to arrange and diglossia stops operating. The varieties are inputs to the definition (input-in-def). Not identity (an arrangement of forms is not itself a form), not purpose (varieties are not built for the sake of diglossia — they precede it in any given community).
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Jul 17, 2026, 11:07 PM UTC
- Content hash
- cc1e9fa3562bf163c118c445a740138fd04d6bcbff680b641e3a3024b8ee7cd0