Retkelle
Retkelle is a Finnish noun form derived from retki, meaning an excursion or trip. In language use it functions as a directional or purposive form that indicates going toward the activity of a trip rather than the place itself. Practically, retkelle is used with verbs of motion to express the idea of “going on a trip” or “setting off on an outing.”
In everyday language, retkelle appears in common phrases such as mennä retkelle (to go on a trip)
Etymologically, retkelle is formed from retki plus the suffix -lle, which in Finnish marks direction toward
Usage notes and nuances: retkelle emphasizes the planned or initiatory aspect of the journey—going to undertake
See also: retki (the base noun), retkellä (being on a trip), Finnish case forms and their usage