Käytettyyn

Käytettyyn is a Finnish word form: the illative singular of the past participle käytetty, which derives from the verb käyttää ("to use"). As an inflected adjective or participle form, käytettyyn is used to mark movement or direction "into" or "to" something described as used or second-hand. It is not a standalone lemma but a grammatical variant that agrees in case with the noun it modifies.

Morphology: käyttää (verb) → käytetty (past participle, "used") + illative singular ending -yn → käytettyyn. The illative in Finnish expresses ingress or target direction, often translated as "into" or "to" in English.

Usage examples:

- käytettyyn autoon ("into/to the used car")

- tätä käytettyyn laitteeseen ei kannata asentaa ("it's not worth installing into this used device")

Käytettyyn appears in written and spoken Finnish wherever an adjective describing a previously used object must be put into the illative case to match the noun. Its exact English rendering depends on context and sentence structure; common translations include "into the used ..." or "to the used ...".