Tiettyihin

Tiettyihin is the plural illative form of the Finnish adjective tietty, meaning “certain” or “specific.” It is used with plural nouns in the illative case to indicate movement toward or focus on some particular items, matters, or groups, for example into certain points or into certain groups.

In Finnish, adjectives agree with the number and case of the nouns they modify. The illative plural form is created by adding the appropriate ending, yielding tiettyihin. The form is typically attached to a noun in illative: tiettyihin seikkoihin, tiettyihin kohteisiin, tiettyihin ryhmiin, and so on.

Common usage and examples:

- Meidän on kiinnitettävä huomiota tiettyihin seikkoihin. (We must pay attention to certain points.)

- Tutkimus keskittyi tiettyihin ryhmiin. (The study focused on certain groups.)

- Toimenpiteisiin liittyy riskejä, joten on arvioitava tiettyihin toimenpiteisiin liittyviä vaikutuksia. (There are risks in the measures, so it is necessary to assess effects related to specific procedures.)

Related forms include tietyt (nominative plural), tiettyjen (genitive plural), and tiettyjä (partitive plural). These forms all derive from tietty and adapt to different grammatical roles. Etymologically, tietty comes from the root tieto “knowledge,” functioning as an adjective meaning “certain/specific.” In ordinary use, tiettyihin modifies plural nouns in illative to express specificity within a plural context.