• an act that violates of the rules of a sport
• become soiled and dirty
• make unclean; "Foul the water"
• spot, stain, or pollute; "The townspeople defiled the river by emptying raw sewage into it"
• make impure; "The industrial wastes polluted the lake"
• commit a Foul; break the rules
• hit a Foul ball
• become or cause to become obstructed; "The leaves clog our drains in the Fall"; "The water pipe is backed up"
• especially of a ship''s lines etc; "with its sails aFoul"; "a Foul anchor"
• disgustingly dirty; filled or smeared with offensive matter; "as filthy as a pigsty"; "a Foul pond"; "a nasty pigsty of a room"
• characterized by obscenity; "had a filthy mouth"; "Foul language"; "smutty jokes"
• thoroughly unpleasant; "filthy (or Foul or nasty or vile) weather we''re having"
• (of a baseball) not hit between the Foul lines
• violating accepted standards or rules; "a dirty fighter"; "used Foul means to gain power"; "a nasty unsporting serve"; "fined for unsportsmanlike behavior"
• offensively malodorous; "a putrid smell"
• (of a manuscript) defaced with changes; "Foul (or dirty) copy"
• highly offensive; arousing aversion or disgust; "a disgusting smell"; "distasteful language"; "a loathsome disease"; "the idea of eating meat is repellent to me"; "revolting food"; "a wicked stench"

'Foul' in other languages