To make dirty.
To make contact with an opposing player in order to gain advantage.
To become clogged.
To become entangled.
To come into contact or collide with.
To besmirch.
To hit a ball outside of the baselines.
To hit outside of the baselines.
To clog or obstruct.
To entangle.
To commit a foul.
Entangled and therefore restricting free movement, not clear.
Detestable, unpleasant, loathsome.
Obscene, vulgar or abusive.
Disgusting, repulsive; causing disgust.
(with "of") Positioned on, in, or near enough to (a specified area) so as to obstruct it.
Dishonest or not conforming to the established rules and customs of a game, conflict, test, etc.
Unpleasant, stormy or rainy.
Covered with, or containing unclean matter; dirty.
Outside of the base lines; in foul territory.
A breach of the rules of a game, especially one involving inappropriate contact with an opposing player in order to gain an advantage; for example, tripping someone up in soccer, or contact of any kind in basketball.
A foul ball, a ball which has been hit outside of the base lines.
A (usually accidental) contact between a bowler and the lane before the bowler has released the ball.
To do a dirty job.
To manure with muck.
To shovel muck.
To vomit.
To pass, to fold without showing one's cards, often done when a better hand has already been revealed.
Heroin.
Semen.
Soft (or slimy) manure.
The pile of discarded cards.
Anything filthy or vile. Dirt; something that makes another thing dirty.
Grub, slop, swill
Slimy mud, sludge.