selvittäneet
Selvittäneet is the past active participle plural form of the Finnish verb selvittää. The verb selvittää has a primary meaning of "to solve," "to clarify," or "to ascertain." Therefore, selvittäneet literally translates to "those who have solved," "those who have clarified," or "those who have ascertained."
In Finnish grammar, the past active participle is used to describe an action that has been completed
The specific nuance of "selvittäneet" depends heavily on the context of the sentence in which it appears.