This is the 3437th most frequent Dutch word.
misdragen
To behave badly or improperly.
Here, 'misdroeg mij' is used reflexively to indicate the subject's own misbehavior.
Ik misdroeg mij tijdens de vergadering omdat ik te geïrriteerd was.
I misbehaved during the meeting because I was too irritated.
In this sentence, 'misdraagt zich' refers to habitual poor behavior by the subject.
Hij misdraagt zich vaak tijdens het avondeten, wat frustrerend kan zijn.
He often misbehaves during dinner, which can be frustrating.
Here, 'zich te misdragen' indicates that the children collectively started acting improperly.