aikuistenkin

Aikuistenkin is a Finnish enclitic expression formed by combining the noun aikuinen (adult) with the enclitic particle -kin. The meaning is effectively “adults too” or “even adults,” and it is used to extend the addressed audience or relevance beyond a base group, such as children or a younger audience.

Morphology and usage: -kin is an enclitic particle that attaches to the preceding word and adds emphasis or inclusivity. In aikuistenkin, the base form aikuisen occurs in the genitive plural (aikuisten), and the suffix -kin signals that adults in addition to others are included. This construction is common in both spoken and written Finnish and is especially frequent in marketing, media, education materials, and everyday discourse when content, products, or activities are intended to appeal to or be suitable for adults as well.

Contexts and notes: Aikuistenkin is one of several -kin forms used to broaden reference, such as lapsillekin or opiskelijoillakin. It is not a proper noun but a grammatical device that Finnish speakers use to modulate scope and inclusivity. The form is well understood in standard Finnish and appears across registers, from casual conversation to more formal descriptions, whenever the speaker wants to signal that adults are included beyond a primary group.