Instrumentalis
Instrumentalis is a term used in linguistics to denote the instrumental case, a grammatical category used by several languages to mark the instrument or means by which an action is performed. The name derives from Latin instrumentum meaning “tool” and the suffix -alis meaning “pertaining to.” In languages that have an instrumental case, the noun inflects to signal its function as instrument or means, and the case can also bear on agency in passive constructions or appear with certain prepositions.
Usage and distribution: The instrumental is a core case in many Slavic languages, where it commonly marks
Examples: Russian: ручкой (hand by a pen, “with a pen”); Polish: długopisem (with a ballpoint pen); Czech:
Relation to other concepts: Instrumentalis is related to the broader concept of grammatical case systems and