käyttämäss
The word "käyttämäss" is a Finnish grammatical form. It is the essive case of the present active participle of the verb "käyttää," which means "to use." The essive case in Finnish indicates a state or condition. Therefore, "käyttämäss" translates to "in use," "being used," or "as something being used."
This form is typically used when describing something that is currently in a state of being utilized.