lisääviin

Lisääviin is a Finnish inflected form of the adjective lisäävä, meaning "increasing" or "adding." It represents the illative plural form, used to modify a noun in illative case. In practice, lisääviin appears in noun phrases describing actions or measures aimed at increasing something, such as lisääviin toimenpiteisiin (to the measures intended to increase) or lisääviin verrokkitietoihin (to the increasing comparative data), though usage is more common in formal or technical contexts. The form is built from lisäävä plus the illative plural suffix -in, which marks direction into a plural noun phrase.

Etymology and morphology: lisäävi– derives from lisäävä, the present active participle of the verb lisätä (to add, to increase). The ending -in is the illative plural, indicating movement toward or into a plural referent. As an adjective in this form, lisääviin agrees with the plural noun it modifies in illative case.

Usage and style: lisääviin is relatively formal and typically appears in administrative, policy, or academic writing. It is not common in everyday speech. In everyday Finnish, speakers might instead use the base adjective lisäävä in other cases or rephrase with a relative clause, such as "toimenpiteisiin, joilla pyritään lisäämiseen." The term should be distinguished from the finite verb form lisäävät (they add) and from other participial forms that do not carry illative morphology.

See also: Finnish grammar, illative case, present active participles, adjectives in Finnish, language registers in Finnish.