In theoretical linguistics, grammaticality is the quality of a linguistic utterance of being grammatically well-formed. Theoretical linguistics is the branch of Linguistics that is most concerned with developing models of linguistic knowledge An utterance is a complete unit of speech in Spoken language. Grammar is the field of Linguistics that covers the Rules governing the use of any given natural language. Gradient well-formedness is a problem that arises in the analysis of linguistic data in which a linguistic entity is neither completely grammatical nor completely ungrammatical
Lyons 1968 defines the concept as "that part of the acceptability of utterances which can be accounted for in terms of the rules," the complement criterion for acceptability being semantic soundness. Semantics is the study of meaning in communication The word derives from Greek σημαντικός ( semantikos) "significant" from
Generative linguists think that for native speakers of natural languages, grammaticality is a matter of linguistic intuition, a competence learned by language acquisition in childhood and therefore strive to predict grammaticality exhaustively. In Theoretical linguistics, generative grammar refers to a particular approach to the study of Syntax. A first language (also mother tongue, native language, arterial language, or L1) is the language a human being learns from birth In the Philosophy of language, a natural language (or ordinary language) is a Language that is spoken or written in phonemic-alphabetic or phonemically-related One hotly debated issue is whether the biological contribution includes capacities specific to language acquisition often referred to as Universal grammar. On the other hand, there is a gradual abandonment of grammaticality in favour of acceptability by linguists that stress the social acquisition of language in contrast to innate factors (and who will seldom rely on phrase structure grammar) in the tradition of Hopper 1987. Prescriptive grammars of controlled natural languages define grammaticality as a matter of explicit consensus. In Linguistics, prescription can refer both to the codification and the enforcement of rules governing how a language is to be used Controlled natural languages (CNLs are subsets of natural languages obtained byrestricting the grammar and vocabulary in orderto reduce or eliminate Ambiguity and complexity
Hopper, Paul (1987): Emergent grammar. In: Aske, Jon et al. (ed. ) (1987): General session and parasession on grammar and cognition. Proceedings of the thirteenth annual meeting. Berkeley: BLS: 139-155.
Lyons, John (1968): Introduction to Theoretical Linguistics. London: Cambridge University Press.