katuihin

Katuihin is a Finnish grammatical form meaning “into the streets.” It is the illative plural of katu, the word for street. In Finnish, the illative case marks motion toward a place, and katuihin specifically signals entering or moving into multiple streets or the street space in general.

The form is used in contexts that describe going into streets, such as walking through a city, participating in public events, or describing urban movement. Because Finnish expresses location and direction through inflection rather than prepositions, katuihin sits among other illative forms that convey movement toward a place.

Formation and usage notes: katuihin is formed by applying the plural illative ending to the stem katu. This reflects Finnish morphology where plural illative forms encode direction toward a plural or collective space. While common in written Finnish, katuihin appears most naturally in contexts dealing with streets as spaces people enter, rather than as mere locations.

Examples and translation: a sentence such as “Me menimme katuihin” translates to “We went into the streets.” The construction is typical of narrative or descriptive prose that emphasizes entry into urban spaces or street-level activity.

See also: Finnish grammar, illative case, spatial language in Finnish.