pidätellessä
The Finnish word "pidätellessä" is the inessive case of the present active participle of the verb "pidätellä". "Pidätellä" is a verb that generally means to hold back, to restrain, to delay, or to keep someone or something waiting. Therefore, "pidätellessä" functions as an adverbial phrase indicating a state or action of holding back, restraining, or delaying.
In practical use, "pidätellessä" describes the circumstances under which something else happens. For example, it might