Aktiivisia

Aktiivisia is the plural partitive form of the Finnish adjective aktiivinen, meaning "active." In Finnish, adjectives decline to agree with the nouns they modify in number and case, and the partitive plural form commonly appears before plural nouns when the noun is in the partitive case. The form aktiivisia is typical for adjectives ending in -inen when used with a plural noun in partitive.

In practice, aktiivisia is used to describe "some active [ones]" as part of an indefinite quantity or ongoing situation. It often appears in noun phrases that serve as the object of a verb or after a preposition that governs the partitive. Examples include aktiivisia lapsia (active children), aktiivisia osia (active components), or aktiivisia osallistujia kampanjassa (active participants in the campaign).

Morphologically, the base adjective aktiivinen has a nominative plural form aktiiviset. The corresponding partitive plural form is aktiivisia. Predicative use, where the adjective describes the subject, typically takes the nominative plural form (aktiiviset) rather than the partitive form (aktiivisia). Thus, you would say something like "Nuo lapset ovat aktiiviset" rather than "Nuo lapset ovat aktiivisia."

Etymology and related terms: Aktiivinen is a Finnish formation meaning "active," derived from the root related to activity and linked to forms in Finnish that borrow vocabulary for modern concepts, often with influences from Latin-based terms through other languages. Related words include aktiivi (activist/active person) and aktiivisuus (activity).