This is the 5844th most frequent Polish word.
zarzutem
"Zarzutem" (instrumental case of "zarzut") means "an accusation" or "a charge."
In this sentence, "zarzutem" is used to mean "accusation" and is instrumental case indicating the tool or method of undermining.
Jego odpowiedź była podważeniem zarzutem w sprawie.
His response was undermining the accusation in the case.
Here, "zarzutem" conveys "accusation" in instrumental case, indicating the entity to be addressed.
Postanowiono zmierzyć się z zarzutem, który pojawił się w ostatnim wywiadzie.
It was decided to address the accusation that appeared in the recent interview.
In this context, "zarzutem" implies "allegation" in instrumental case, describing a view or criticism presented against someone.