seitsemänkymmentä

Seitsemänkymmentä is the Finnish cardinal numeral for the value 70. It is a compound formed from seitsemän (seven) and kymmentä, the pattern used in Finnish for numbers from 20 to 99. The word is written as a single form, seitsemänkymmentä, and is used in ordinary counting and in phrases involving quantities, including ages and years.

In grammatical use, Finnish numerals decline to agree with the noun they modify. For example, with a noun in partitive or other cases, seitsemänkymmentä can appear in its inflected form while the accompanying noun carries the appropriate case ending. A typical construction is seitsemänkymmentä vuotta vanha (seventy years old). The numeral is also used in longer expressions, such as describing ages, dates, or counts within a larger phrase.

Seitsemänkymmentä belongs to the common Finnic system of 20–99 numerals formed with -kymmentä, including kaksikymmentä (20), kolmekymmentä (30), neljäkymmentä (40), viisikymmentä (50), kuusikymmentä (60), kahdeksankymmentä (80) and yhdeksänkymmentä (90). The etymology traces to seven (seitsemän) plus tens (kymmentä), a traditional formation from Proto-Finnic onward.

In modern Finnish, 70 can also be written numerically as 70, and the spoken form remains seitsemänkymmentä. The ordinal for seventy is seitsemänkymmenes, used for indicating the seventy-fifth? etc., when counting ordinals rather than cardinals. See also Finnish numerals, number formation, and the Finnish language.