Tiettyinä

Tiettyinä is a Finnish adjectival form derived from tietty, meaning “certain” or “particular.” The ending -inä marks a translative plural form used with plural nouns to express that something applies in a specific but non-universal sense. In practice, tiettyinä is most commonly found in phrases such as tiettyinä päivinä (“on certain days”) or tiettyinä vuosina (“in certain years”). These constructions indicate that a statement, condition, or observation holds only under particular times or circumstances.

The form agrees with the following noun in number and case, typically appearing with plural nouns in phrases that describe time, conditions, or contexts. It is frequently used in written Finnish, including descriptive writing, reports, schedules, historical accounts, and policy language, where precise but non-general statements are needed. In everyday speech, speakers often substitute with more general expressions like joidenkin päivien aikana or joitakin aikoja, depending on rhythm and emphasis.

Usage notes:

- tiettyinä päivinä = on certain days

- tiettyinä vuosina = in certain years

- tiettyinä aikoina = at particular times

Etymology and related forms: tiettyä, tiettyäni, tiettyjen, etc., are inflected forms of tietty. The translative -nä/-nä is a standard Finnish suffix used to convey a role, state, or time-specific condition in relation to the noun it modifies.

See also: Finnish adjective inflection, translative case, Finnish time expressions.

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