tarkkaavaiseen

Tarkkaavaiseen is a Finnish inflected form of the adjective tarkkaavainen, which means attentive or vigilant. It is not a separate lexical entry, but a case form that can appear when the adjective is used within a grammatical structure requiring a case ending. Specifically, tarkkaavaiseen is the illative singular form of tarkkaavainen, used in contexts where the clause or phrase expresses motion toward or into something described by the adjective. The corresponding genitive singular form of the adjective is tarkkaavaisen.

In Finnish, adjectives decline for case, number, and, to some extent, definiteness. When an adjective is used in a way that resembles a noun, or in phrases governed by a case marking, its inflected forms—such as tarkkaavaiseen—may surface. Because tarkkaavaiseen is tied to a particular grammatical function rather than standing as an independent root word, it appears mainly in linguistic descriptions, grammar exercises, or older and more formal texts. In everyday language, speakers are more likely to use a noun phrase such as tarkkaavainen henkilö or similar constructions to convey the idea of an “attentive person.”

Etymology and morphology: tarkkaavainen is formed from tarkka- (careful, precise) with the suffix -ainen to create an adjective meaning “characterized by being careful.” The illative ending -ise-n (tarkkaavaiseen) marks a directional or purposive case in Finnish.

See also: tarkkaavainen, Finnish grammar, adjectives as nouns.

References: Finnish language grammar resources on case endings and adjective inflection.