erisuuntaisiin

Erisuuntaisiin is a Finnish grammatical form, the illative plural of the adjective erisuuntainen, which means “in differing directions” or “multi-directional.” The form describes movement toward or into multiple directions and is used to modify a noun in the illative case, indicating direction into several paths, routes, or concepts.

The base erisuuntainen combines eri- (“different”) with suunta (“direction”) and the suffix -inen to form an adjective. The illative plural suffix -isiin attaches to this stem to yield erisuuntaisiin, used with plural illative nouns. In practice, erisuuntaisiin appears in phrases such as erisuuntaisiin suuntiin or erisuuntaisiin reitteihin, where the noun is in the illative plural.

Usage of erisuuntaisiin is common in descriptive or technical Finnish, including geography, transportation planning, physics, or architectural descriptions, whenever something splits or extends toward several directions. For example: Polut haarautuivat ja suuntautuivat erisuuntaisiin suuntiin, meaning the paths branched and headed in different directions.

Related forms and concepts include erisuuntaiset (plural nominative), erisuuntainen (singular), and erisuuntaisuus (the noun form meaning multi-directionality). The term is closely related to other directional terms such as monisuuntainen (multi-directional) and suunta, which denotes direction in general. While erisuuntaisiin is primarily a grammatical inflection, it is useful for precise description in maps, diagrams, and technical writing.