Kauniainen

Etymology
Originally the name of an estate and village near Nokia, probably from a pre-Christian given name (presumably from ).

The name for the town near Helsinki is based on a farm name found on some late 19th century maps. The farm may have been named after the aforementioned estate near Nokia. The name was revived in the late 1920s and became established in the 1930s (replacing an earlier name [< ] which was based on the Swedish name ), but was only taken into official use in 1949.

Proper noun

 * 1) A town and municipality in the Helsinki metropolitan region, Finland.

Declension
Note that the inflected forms are formed as if they were plural.