Viidennessä

Viidennessä is the inessive singular form of the Finnish ordinal number viides, meaning “fifth.” It is used to express location or state within something, translating roughly to “in the fifth …” in English. Like other ordinal numerals, viides behaves like an adjective and declines for case and number. The corresponding plural in the inessive is viidennissä, used when referring to multiple fifths or fifth stages.

The form viidennessä is typically attached to a singular noun in the inessive case, for example viidennessä luokassa (in the fifth grade), viidennessä kerroksessa (on the fifth floor), or viidennessä vaiheessa (at the fifth phase). In writing and formal speech it is common to see it used to specify a position within a sequence, period, or location.

In grammar, viidennessä is related to other inflectional forms of the ordinal viides, including the genitive form viidennen (e.g., viidennen luokan näkökulma, the view of the fifth class), and the nominative viides (the fifth). The exact endings follow Finnish adjective-like declension rules, with the inessive singular ending -ssä and the inessive plural ending -issä.

Summary: viidennessä marks “in the fifth” and is a standard grammatical form for indicating location or state within a fifth item, stage, or period. It is a common component in educational, architectural, and procedural contexts in Finnish. See also viides, the base ordinal, and Finnish grammar resources for ordinal numeral declension.