tuettuun

Tuettuun is a Finnish grammatical form, specifically the illative singular of the adjective tuettu, meaning "supported." It functions to express direction or movement toward something that is described as supported, and it is most common in technical, architectural, and engineering contexts, though it can appear in general prose. The illative case marks destination rather than subject, so tuettuun rakenteeseen literally means "into the supported structure."

Formation: tuettu is the past passive participle of tukea (to support). The illative suffix -uun attaches to the stem to yield tuettuun. When used before a noun, tuettuun agrees in case and number: tuettuun taloon (into the supported house), tuettuun rakenteeseen (into the supported structure).

Usage notes: The term emphasizes that the target is itself reinforced or supported; it is not used to describe something that merely lacks support. In technical documents you may encounter phrases like "tuettuun tilaan asennettu kattorakenne" (a roof structure installed into a supported space) or "tuettuun käyttöön suunniteltu laite" (a device designed for supported use). The form is fairly specialized and more common in registers that deal with construction, safety, or compliance.

See also: Finnish grammar, illative case, participles.