perusteineen

Perusteineen is a Finnish expression meaning “with its foundations” or “with its basis.” It is formed by the noun peruste (“foundation, basis”) combined with the suffix -ineen, which marks accompaniment. The form is primarily found in written Finnish and is most common in formal, academic, or descriptive prose.

Usage-wise, perusteineen can be used both literally and figuratively. Literally, it can describe something presented together with its physical base or supporting elements. Figuratively, it refers to something presented with its underlying reasoning, evidence, or framework. The construction often highlights completeness or self-containment, signaling that the subject is accompanied by its essential components.

Common contexts include academic reports, historical descriptions, or journalistic accounts where materials, sources, or arguments are presented together with their foundations. For example: Tutkimusraportti esitettiin perusteineen ja liitteineen. Artikkeli väitteensä perusteineen ja todisteineen.

Nuance and style-wise, perusteineen tends to carry a formal or high-register tone and can sound somewhat elevated or traditional in everyday speech. In casual language, speakers may choose alternatives such as “perusteiden mukaan” (according to the bases) or “perustellusti” (with justification), depending on the intended meaning.

In translation, perusteineen is often rendered as “with its bases/foundations” or “together with its supporting materials,” with attention to whether the emphasis is on physical foundations or underlying arguments. See also related Finnish constructions that express accompaniment with accompanying materials or evidence.