This is the 11109th most frequent Polish word.
gderać
To grumble or complain persistently.
Here, "gderać" is employed in the context of expressing annoyance or criticism in a repetitive way.
Nie chcę gderać, ale powinieneś posprzątać pokój.
I don't want to nag, but you should clean your room.
In this example, "gderać" conveys dissatisfaction about something, typically expressed repeatedly.
Przestań gderać, wszystko już jest zrobione.
Stop grumbling, everything is already done.
The word "gderać" is used here to describe someone persistently complaining in a monotonous manner.