Gerundiactio

Gerundiactio is a hypothetical linguistic term describing a non-finite verbal form that functions as a noun while encoding agentive action by a specified participant. The name combines gerund, a verbal noun, with actio, Latin for action, to signal its dual nominal and verbal semantics.

In theory, a gerundiactio would surface as a gerund-like form that carries explicit agent morphology, allowing the agent to be identified as part of the non-finite phrase. Morphology might involve attaching an agentive marker to a gerundial stem and applying case or prepositional marking to indicate the agent’s role. Syntactically, such a form could function as a subject, object, or complement, and may interact with surrounding agreement or control structures.

The term is primarily a theoretical construct used in linguistic typology to explore how languages distinguish nominalization from non-finite verbal semantics and how agent information can be packaged within a non-finite form. It is not widely attested in descriptions of natural languages, but it serves as a useful device for contrasting with related categories like standard gerunds, verbal nouns, and participles. Researchers use the concept to frame questions about agentivity, aspect, and argument structure in non-finite clauses.

Illustrative sense: a gerundiactio could express “the act of John running” with explicit agent marking, allowing the action to be treated as a noun phrase while still retaining verbal content. Related concepts include gerunds, verbal nouns, and participles.