Sisäisinä

Sisäisinä is the essive plural form of the Finnish adjective sisäinen, meaning internal or inner. It is used to describe something or someone as existing in a temporary state or role, specifically in the sense of “as internal.”

In Finnish grammar the essive case marks a state or role, similar to the English use of “as.” For adjectives, the plural essive form ends in -isinä, yielding sisäisinä from sisäinen. This form typically accompanies plural nouns and expresses that the subjects are being considered or described in the capacity of internal parts or aspects, for example in phrases like sisäisinä osapuolina (as internal parties) in a negotiation context. The exact syntax can vary with the noun it modifies, but the essive plural generally conveys the sense of acting or existing in that stated role.

Usage of sisäisinä is most common in written, formal, or analytic Finnish. It appears in linguistic descriptions, academic writing, or legal and bureaucratic language. In everyday speech, speakers often avoid extended essive constructions and use simpler phrases or context to convey a similar meaning.

Related grammatical forms stem from the base adjective sisäinen with other case endings such as inessive, illative, or translative forms, and from other Finnish adjectives that decline similarly. Understanding sisäisinä helps clarify how Finnish expresses states and roles across number and case in a compact morphological system.