liukuun

Liukuun is a Finnish illative form. It represents the illative singular of the noun liuku, which means slip, glide, or sliding. In Finnish, the illative case answers questions such as “into what?” and is used to express movement into a location or into a state. The form liukuun is produced by attaching the illative suffix -uun to the stem liuku-, following Finnish vowel harmony. Because the stem ends in the vowel u, the illative suffix takes the -uun shape, yielding liukuun.

The base noun liuku refers to the act or phenomenon of sliding, including a sliding surface or motion. The illative liukuun, therefore, can be used when describing entering a state or space characterized by sliding, or in linguistic or descriptive contexts where such motion is being discussed. Since liuku is relatively specialized, liukuun is most commonly encountered in dictionaries, grammars, or technical texts rather than in ordinary everyday speech.

Related terms in Finnish grammar include the general illative marker and other illative forms formed with different suffixes depending on stem type and vowel harmony. The word liuku is also related to the verb liukua, meaning to glide or slip, from which the noun liuku is derived.

See also: Finnish grammar, illative case, liukua, liuku (slip, glide).