pohjaaviin

Pohjaaviin is a Finnish word form: the illative plural of the adjective pohjaava. As an inflected form, it is not a separate lexical entry but a grammatical variant used to indicate movement, direction, or change "into" a set of things described by the adjective pohjaava ("foundational", "underlying", or "base-forming").

Morphologically it breaks down as pohja- (root, from pohja "base, bottom") + -ava (adjective-forming suffix) with the plural and illative endings that yield pohjaaviin. The illative plural in Finnish marks motion or transition into multiple entities and commonly appears after verbs that govern the illative case (for example, päätyä "to end up", siirtyä "to move to").

Examples:

- Päädyttiin pohjaaviin ratkaisuihin. (We ended up in foundational solutions.)

- Keskustelu siirtyi pohjaaviin kysymyksiin. (The discussion moved into underlying questions.)

Usage notes: pohjaaviin occurs wherever an adjective-based phrase must be put into the illative plural; synonymous expressions may use different adjectives (e.g., pohjautuviin, perustaaviin) or alternative case constructions depending on nuance. As a grammatical form it appears in written and spoken Finnish in formal and informal contexts wherever the illative plural is required.