phrase informal(alsofilthily rich) extremely rich: 极有钱，富得流油 The profession is dominated by filthy rich white men. His family got filthy rich when oil prices rose. Shareholders are suing the company's filthy rich chief executive. Most of her clients are well-off but not filthy rich. Most of us are working really hard in order to make someone else filthy rich. They got filthily rich by exploiting and underpaying their workers. See also
filthyadverb
filthy rich | American Dictionary
filthy rich
idiom extremely rich: His parents are filthy rich, so he gets everything he wants.