muuttoilla
Muuttoilla is a Finnish term that can be understood as "on migrations" or "during migrations." It is formed from the noun muutto (migration, relocation) with the adessive plural suffix -illa, a grammatical ending in Finnish that marks location or temporal context. In practice, muuttoilla is used when discussing migratory events as circumstances or settings.
In linguistic descriptions, muuttoilla denotes that an action or state occurs in the context of migration.
In contemporary usage, muuttoilla remains a specialized term, mostly found in academic writing, demographic studies, archival
The term illustrates how Finnish uses case endings to encode spatial and temporal relations with a root