The '''Usageusage-based linguistics''' is a [[linguistics]] approach within a broader [[Functional linguistics|functional]]/[[Cognitive linguistics|cognitive]] framework, that emerged since the late 1980s, and that assumes a profound relation between linguistic structure and usage.<ref name="Mengden2014">{{Cite book |doi = 10.1075/sfsl.69.01men|chapter = Introduction. The role of change in usage-based conceptions of language|title = Usage-Based Approaches to Language Change|series = Studies in Functional and Structural Linguistics|year = 2014|last1 = von Mengden|first1 = Ferdinand|last2 = Coussé|first2 = Evie|volume = 69|pages = 1–20|isbn = 978-90-272-1579-6}}</ref> It challenges the dominant focus, in 20th century linguistics (and in particular con [[Formal linguistics|formalism]]-[[generativism]]), on considering language as an isolated system removed from its use in human interaction and human cognition.<ref name="Mengden2014"/> Rather, usage-based models posit that linguistic information is expressed via context-sensitive mental processing and mental representations, which have the cognitive ability to succinctly account for the complexity of actual language use at all levels ([[phonetics]] and [[phonology]], morphology and [[syntax]], [[pragmatics]] and [[semantics]]). Broadly speaking, a usage-based model of language accounts for [[language acquisition]] and processing, synchronic and diachronic patterns, and both low-level and high-level structure in language, by looking at actual language use.
The term ''usage-based'' was coined by [[Ronald Langacker]] in 1987.<ref>{{Cite journal|last=Serafima Gettys, Patricia Bayona, Rocío Rodríguez|title=From a Usage-Based Model to Usage-Based Instruction: Testing the theory|url=http://ijehd.cgrd.org/images/vol4no2/6.pdf|journal=International Journal of Education and Human Developments|volume=4|pages=50}}</ref> Usage-based models of language have become a significant new trend in linguistics since the early 2000s.<ref name="Mengden2014" /> Influential proponents of usage-based linguistics include [[Michael Tomasello]], [[Joan Bybee]] and [[Morten H. Christiansen|Morten Christiansen]].
