perustuvaa

Perustuvaa is a Finnish grammatical form derived from the verb perustua, meaning “to be based on” or “to rest on.” It is the partitive singular form of the present active participle perustuva, which describes something that is based on or founded on another source. In practice, perustuvaa is used to modify a noun in a sentence that is in the partitive case, commonly in formal or academic Finnish.

Usage and function

Perustuvaa functions as a participial modifier that conveys a basis or foundation for the noun it accompanies. Its primary role is to qualify statements such as theories, claims, or research that rely on a particular source or framework. Because Finnish participles behave like adjectives, perustuvaa must agree with the noun it describes in case, number, and definiteness within the sentence. This results in forms like perustuvaa tutkimusta or perustuvaa teoriaa, depending on the grammatical context.

Examples

- perustuvaa tutkimusta tarkoittava virhe-tietoisuus (awareness of information that is based on research)

- perustuvaa teoriaa esitellään raportissa (a theory based on [something] is presented in the report)

Relation to other terms

Perustuvaa is closely related to the verb perustua and its nominal stem perusta/peruste. It is distinct from daha passive or other participial forms, and its use is most common in written Finnish, especially in academic or analytical writing.

See also

Perustua, perusta, peruste, Finnish participles, Finnish grammar.