perusteille

Perusteille is a Finnish noun form: it is the allative plural of the word peruste, which means basis, foundation, premise, or reason. The allative case in Finnish marks direction toward something, so perusteille literally translates as “to the bases” or “to the foundations.”

In usage, perusteille is used to indicate movement toward the bases or to refer to a figurative destination related to grounds, criteria, or prerequisites. It often appears in contexts that involve reaching or considering the fundamental elements of an argument, project, or plan. The form is created from the plural stems perusteet (the bases/foundations) with the allative ending -lle, yielding perusteille.

Examples (illustrative):

- Mene perusteille. (I am going to the foundations.)

- Keskustelu eteni perusteille. (The discussion moved to the bases/foundations.)

Notes on meaning and nuance:

- Peruste has senses connected to both physical foundations and abstract grounds or reasons.

- The allative form perusteille emphasizes direction toward those foundations and is more common in formal or technical language; in everyday speech speakers may instead use other constructions such as peruseen, perusteen mukaan, or perusta on, depending on meaning.

- The singular allative form is perusteelle and refers to “to the basis,” while perusteille clearly refers to multiple bases or grounds.

Related terms include peruste, perusteet, and phrases built around the concept of basis or justification.