1. (

• foul ,

) hit a foul ball ;

2. (

• pollute ,
• foul ,
• contaminate

) make impure; "The industrial wastes polluted the lake" ;

3. (

• clog ,
• choke_off ,
• clog_up ,
• back_up ,
• congest ,
• choke ,
• foul

) become or cause to become obstructed; "The leaves clog our drains in the Fall"; "The water pipe is backed up" ;

4. (

• foul

) commit a foul; break the rules ;

5. (

• foul ,
• befoul ,
• defile ,
• maculate

) spot, stain, or pollute; "The townspeople defiled the river by emptying raw sewage into it" ;

6. (

• foul ,

) make unclean; "foul the water" ;

7. (

• foul

) become soiled and dirty ;

1. (

• disgusting ,
• disgustful ,
• distasteful ,
• foul ,
• loathly ,
• loathsome ,
• repellent ,
• repellant ,
• repelling ,
• revolting ,
• skanky ,
• wicked ,
• yucky

) 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" ;

2. (

• fetid ,
• foetid ,
• foul ,
• foul-smelling ,
• funky ,
• noisome ,
• smelly ,
• stinking ,
• ill-scented

) offensively malodorous; "a foul odor"; "the kitchen smelled really funky" ;

3. (

• cheating ,
• dirty ,
• foul ,
• unsporting ,
• unsportsmanlike

) violating accepted standards or rules; "a dirty fighter"; "used foul means to gain power"; "a nasty unsporting serve"; "fined for unsportsmanlike behavior" ;

4. (

• foul

) (of a baseball) not hit between the foul lines ;

5. (

• dirty ,
• foul ,
• marked-up

) (of a manuscript) defaced with changes; "foul (or dirty) copy" ;

6. (

• cruddy ,
• filthy ,
• foul ,
• nasty ,
• smutty

) characterized by obscenity; "had a filthy mouth"; "foul language"; "smutty jokes" ;

7. (

• filthy ,
• foul ,
• nasty

) disgustingly dirty; filled or smeared with offensive matter; "as filthy as a pigsty"; "a foul pond"; "a nasty pigsty of a room" ;

8. (

• afoul ,
• foul ,
• fouled

) especially of a ship's lines etc; "with its sails afoul"; "a foul anchor" ;