käsitelleensä

Käsitelleensä is the past active perfect participle of the Finnish verb "käsitellä". The verb "käsitellä" has several meanings, including to handle, to process, to deal with, to treat, or to discuss. Therefore, "käsitelleensä" indicates that someone has completed the action of handling, processing, dealing with, treating, or discussing something, and this fact is being mentioned in relation to another event or state.

This form is often used to express a cause or a preceding action that has a consequence. For example, "Koska hän oli käsitelleensä paperit huolellisesti, hän löysi tarvitsemansa tiedon" translates to "Because he had handled the papers carefully, he found the information he needed." Here, "käsitelleensä" describes the prior action of handling the papers, which led to finding the information.

Another common usage is in subordinate clauses, often introduced by conjunctions like "kun" (when) or "joka" (who/which). For instance, "Opettaja, joka oli käsitelleensä oppilaan työn, antoi palautetta" means "The teacher, who had dealt with the student's work, gave feedback." In this sentence, "käsitelleensä" specifies what the teacher had done before giving feedback.

The structure of "käsitelleensä" involves the past active participle stem of "käsitellä" (käsitelle-) followed by the possessive suffix "-nsä", which indicates that the subject performing the action of "käsitellä" is the same as the subject of the main clause. This suffix corresponds to the third person singular or plural possessive.