niepotrzebnym
The Polish word "niepotrzebnym" is the instrumental case of the adjective "niepotrzebny." As an adjective, "niepotrzebny" translates to "unnecessary" or "needless" in English. The instrumental case is used in Polish to indicate the means by which something is done, or to describe something as being a certain way, often after verbs like "być" (to be) when referring to a state or condition, or with prepositions.
Therefore, "niepotrzebnym" signifies something that is unnecessary, serving no required purpose, or is superfluous. For instance,