etuistuimilla
Etuistuimilla is a Finnish locative form meaning “on the front seats” or “at the front seats.” It represents the plural adessive case of the noun etuistuin, a compound formed from etu- meaning front and istuin meaning seat. The adessive suffix -lla/llä marks location, so etuistuimilla literally locates something on the front seats.
Etuistuimilla is commonly used to describe where people or objects are located within a vehicle or space,
- Kuski istuu etuistuimella. (The driver sits in the front seat.)
- Matkustajat istuivat etuistuimilla koko matkan. (The passengers sat in the front seats for the whole trip.)
Etuistuimet is the plural noun for “front seats,” while etuistuimilla is specifically the plural locative form.