Kahdeksaksi

Kahdeksaksi is the translative form of the Finnish cardinal number kahdeksan (eight). It is created by adding the suffix -ksi to the stem kahdeks-, and it functions as a grammatical form rather than a separate word. The translative form is used to express a change of state or a time point, particularly in time expressions and deadlines.

The primary usage of kahdeksaksi is in phrases that indicate time or a deadline. Common examples include kello kahdeksaksi meaning “by eight o’clock” or “at eight o’clock,” and lähteä kahdeksi/kahdeksaksi in the sense of scheduling to leave at eight. Kahdeksaksi is part of a broader system in Finnish where numerals take translative forms to indicate turning into a value or specifying a moment in time, alongside forms such as kolmeksi, viideksi, and kymmeneksi.

Kahdeksaksi is typically found in more formal or written contexts, especially in schedules, announcements, or instructions. It is not a separate lexical word for eight, but a case form that modifies the numeral kahdeksan to fit the grammatical needs of the sentence.

See also: Finnish translative case; kahdeksan; numerals in Finnish.