jäihin

Jäihin is a Finnish grammatical form of the noun jää, meaning ice. It is the illative plural, used to express movement toward or into multiple ice surfaces, such as frozen lakes or sea ice. The form appears in sentences describing entering onto ice or traveling onto frozen surfaces, especially in winter contexts.

In Finnish, the illative plural is formed by adding the suffix -iin/-ihin to the plural stem of the noun. For jää, the illative plural is jäihin. The corresponding singular illative is jääseen (to the ice). The base noun has other forms such as jää (ice), jäät (plural), jäällä (on the ice), jäästä (from the ice).

Jäihin is used with verbs of motion or change of location. It emphasizes entering or stepping onto the ice rather than merely being on it. It is common in descriptive writing about winter landscapes, ice roads, or ice-fishing contexts.

The term is standard Finnish and is taught in basic Finnish grammar. It does not function as a separate lexical entry beyond its inflected form, but it is a reliable example of Finnish case and number inflection for the noun jää.

See also: jää, Finnish grammar, illative case.