autenttisiin

Autenttisiin is Finnish, forming the illative plural of the adjective autenttinen, which means authentic or genuine. The illative case conveys direction toward something, so autenttisiin is used with plural nouns in the illative, for example autenttisiin lähteisiin (to authentic sources) or autenttisiin dokumentteihin (to authentic documents).

Morphology and usage notes: autenttisen is the genitive singular form, autenttisten is the genitive plural form, and autenttisiin is the illative plural form. The partitive plural form is autenttisia. In practice, autenttisiin is most commonly found in written Finnish, especially in academic, journalistic, or legal contexts where authenticity, verification, or credibility of sources or items is being described.

Usage considerations: The term contrasts with more everyday synonyms like aito, which emphasizes genuineness or original origin. Autenttinen and its derivatives often carry a sense of verification or authority, such as sources, documents, or data that have been checked for authenticity. The form autenttisiin is appropriate when the referenced nouns are plural and in illative case, indicating movement toward or focus on authentic entities.

Etymology: The adjective autenttinen derives from autentti, from the broader family of words meaning authentic, rooted in Latin authenticus and passing into Finnish through Western European languages. The noun autenttisuus meaning authenticity is closely related and widely used in discourse about credibility and verification.

See also: autenttisuus, aitous, lähde, lähdekritiikki.