a knock-down, drag-out fight

a knock-down, drag-out fight

AMERICAN
A knock-down, drag-out fight is a very serious, emotional and often violent fight or argument. This year, nobody wanted another knock-down, drag-out fight over the state budget. You shouldn't engage in knock-down drag-out fights in front of your children. Note: This expression refers to a type of boxing match in which a fighter who had been knocked down was dragged out of the ring and replaced by another contestant.
See also: fight