vähentäessään

vähentäessään is the inessive case of the third infinitive of the Finnish verb vähentää. The verb vähentää means to reduce, decrease, lessen, or diminish. The third infinitive is a verbal form that expresses a continuous or habitual action, and the inessive case (-ssä/-ssä) indicates that the action is taking place within or during a certain state or activity. Therefore, vähentäessään translates roughly to "while reducing," "upon reducing," or "in the process of reducing." It describes a situation or action that occurs concurrently with the act of reducing something. For example, "Hän loukkaantui vähentäessään nopeutta" means "He got injured while reducing speed." The specific nuance can depend on the context of the sentence in which it appears. It is a grammatical construction used to link two simultaneous actions or to describe a condition under which something else happens.