Middleactive

Middleactive is a proposed grammatical category in linguistic typology that combines features of the middle voice with active voice semantics. In this account, a single verb form encodes both a reflexive or self-directed involvement of the subject and overt agency, typically without an explicit external patient distinct from the subject. The middleactive category is not widely attested as a discrete system in natural languages, but has been discussed in theoretical work as a way to model competition between valency-changing processes and as a possible stage in the evolution of voice systems.

In terms of morphology and syntax, middleactive constructions are described as showing affixal or stem-changing markers that signal both the indirection of the patient and the subject's participation. They may pair with intransitive or monovalent transitive patterns and can be related to reflexive or autobenefactive readings. The semantic profile often involves self-directed impact, benefit to the subject, or action affecting the subject's own state.

Cross-linguistic evidence for a dedicated middleactive category is debated; some analysts treat middle-active-like forms as a subtype of middle voice with heightened agentivity, while others regard them as emergent from broader middle or active systems. In practice, middleactive is most often discussed in theoretical, descriptive, or constructed-language contexts and has potential relevance for computational modeling of voice.