viidenkymmenen

Viidenkymmenen is the genitive form of the Finnish numeral viisikymmentä, which means fifty. It is used in phrases where the numeral functions as an adjective to modify a noun, especially when the expression is structured to indicate a unit, amount, duration, or age.

In Finnish, numerals decline to agree with the nouns they modify. The basic form viisikymmentä is often used alone or with a noun in its base case, while viidenkymmenen appears when a genitive construction is needed in a compound expression. For example, viidenkymmenen kilometrin matka means a fifty-kilometer journey, and viidenkymmenen vuoden kokemus means fifty years of experience. Such forms are common in written and spoken Finnish when precise measurement or duration is described.

Usage notes and variations:

- In many contexts asking for a general quantity, the partitive form is used with the noun, as in viisikymmentä kilometriä for “fifty kilometers.”

- When the noun following the numeral is treated as a unit in a fixed phrase, the genitive form viidenkymmenen can precede the unit in its genitive form, as in viidenkymmenen päivän projekti.

- The choice between viisikymmentä and viidenkymmenen depends on the syntactic role of the noun and the case used in the phrase.

See also: Finnish numerals, viisikymmentä, kymmentä.