Testeihin

Testeihin is the illative plural form of the Finnish noun testi, meaning "tests." The illative case expresses motion toward or into something, roughly “into” or “to.” In the plural, the illative suffix is typically -eihin, yielding testeihin from testi. The corresponding singular illative form is testiin, as in “testiin” meaning “into a test.”

Etymology and use: The word testi is a loanword from English, meaning “test.” The form testeihin is used when referring to multiple tests or to a testing session that involves several tests. It marks movement toward or involvement in the tests and can describe participation, direction, or focus on testing as a set.

Usage examples: In medical, educational, or research contexts, you may encounter phrases such as “Olemme menossa testeihin” (We are going to the tests) or “Klinisessa tutkimuksessa osallistujat ohjattiin testeihin” (In the clinical trial, participants were directed to the tests). The plural illative is common when discussing testing as a group rather than a single test.

See also: Finnish language; Illative case; Test (English).