instrumentalneuter
Instrumentalneuter is a term used in linguistic typology to describe a theoretical cross-category in which neuter-gender nouns participate in, or are marked by, the instrumental case in a way that is distinct from other genders. The label combines instrumental (case marking used to describe means or agency) with neuter (a grammatical gender). The concept is largely descriptive and not universally standardized; it appears in discussions of inflectional systems, historical linguistics, and the analysis of languages with rich case inventories where neuter nouns may exhibit unique instrumental patterns.
In practice, instrumentalneuter is most often invoked in typological studies and reconstructions to discuss how languages
Some researchers treat instrumentalneuter as a methodological label rather than a strict grammatical category, using it