kevyisiin

Keviisiin is a Finnish linguistic term that refers to a particular inflected form of the adjective kevyt meaning light, or more generally to “the lighter ones” in plural. It illustrates the illative plural in Finnish, formed by adding the suffix -iin to a stem beginning with kevy-. The resulting form kevyisiin functions as an illative indicating movement toward or into something described by lightness, with an accompanying noun often omitted in examples. Keviisiin is rarely used in everyday language and is mostly encountered in grammar discussions, philology, or poetry to demonstrate Finnish case and number concord. In normal prose you would typically include a noun such as kevyisiin esineisiin (into light-weight objects) or kevyisiin vaihtoehtoihin depending on context.

The word is not standard vocabulary; rather it is an illustration of Finnish inflection patterns. The emphasis is on the concept of illative plural with adjectives used as attributives. Related topics include Finnish grammar, the illative case, and plural agreement.