befoul
- v spot, stain, or pollute
- Not only does cigarette smoke befoul cabin air, which is pressurized at the equivalent of 2,500 ft.
- A Matter of Urgency Americans have managed to befoul their natural resources on a scale unparalleled in history.
- Thus this vasty Audubon, who could prevision the cities that were to mar and befoul his beautiful Ohio River; the laying waste of the forests; the slaughter of the deer and wild .