This is the 10821st most frequent German word.
rüppel
"Rüppel" is a colloquial term meaning "ruffian" or "rowdy person."
Here, 'Rüppel' refers to someone behaving rudely or disrespectfully, used to describe a misbehaving boy.
Der Junge benahm sich wie ein Rüppel und störte den Unterricht.
The boy behaved like a ruffian and disturbed the class.
In this sentence, 'Rüppel' conveys someone who lacks manners or consideration, in this case, describing the brother’s action.
Sie schimpfte ihren Bruder als Rüppel, weil er ihre Sachen nahm ohne zu fragen.
She called her brother a ruffian because he took her things without asking.
Here, 'Rüppel' is used metaphorically to warn someone about their inappropriate social behavior.