opettavaisissa

Opettavaisissa is a Finnish adjective form meaning “instructive” or “didactic.” It is the plural inessive form of the adjective opettavainen and is used to describe plural nouns in the inessive case, often translated as “in instructive contexts” or “in instructive [things].”

The form is typically used in phrases such as opettavaisissa kirjoissa (in instructive books) or opettavaisissa tilanteissa (in instructional contexts). Because it is an inflected form, opettavaisissa alone is rarely a standalone concept; it functions as a modifier when followed by a noun in the plural in the inessive.

Opettavainen means that something has a didactic or educational quality. It is derived from the verb opettaa, “to teach,” with the suffix -vainen forming adjectives that express “characterized by” or “having the quality of.” Related terms include opettavuus, meaning “instructiveness” or “didacticism,” and opettaminen, meaning “teaching.”

In usage, opettavaisissa can contribute to a neutral, descriptive tone, often appearing in educational, scholarly, or literary contexts where the didactic character of materials, discussions, or sources is being noted. The word illustrates Finnish adjective inflection and how case and number interact in modifier phrases.