Korostettaessa

Korostettaessa is a Finnish non-finite verb form, specifically the third infinitive, derived from the verb korostaa (to emphasize). It is used to express a circumstance or condition under which the action of the main clause occurs. The form corresponds to the English “when emphasizing” or “in emphasising,” and it is most common in formal, technical, or instructional writing rather than in everyday speech.

Usage and function

Korostettaessa introduces an adverbial clause that sets the context for the main clause. It indicates that the main action takes place in the situation described by emphasizing something. The clause is non-finite, meaning it does not have its own explicit subject or finite verb form; the meaning is integrated with the main clause. This form helps to connect actions and to present procedures, guidelines, or explanations in a concise, formal style.

Formation and notes

In Finnish grammar, the third infinitive is formed with the suffix -tta/-ttä on the verb stem. Korostettaessa comes from korostaa and is used when a general condition or circumstance about emphasizing is being described. It is typically found in written language such as manuals, academic texts, and official documents. The use of korostettaessa can sometimes be replaced by more common conjunctions like kun or kunhan in colloquial style, but it carries a more formal or technical nuance in written Finnish.

Example

Korostettaessa otsikkoa, käytetään suurempaa kirjasinkokoa. (When emphasising the heading, a larger font size is used.)

Relation to other forms

Korostettaessa contrasts with finite clauses and other non-finite forms such as the first or second infinitives, and with the passive or participial forms that express aspect or voice. It remains a specialized tool for precise, formal expression in Finnish.