"foul" as adjective
1 - Covered with, or containing unclean matter; dirty.
2 - (of words or a way of speaking) obscene, vulgar or abusive.
3 - Detestable, unpleasant, loathsome.
"foul" as noun
1 - 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.
2 - A (usually accidental) contact between a bowler and the lane before the bowler has released the ball.
3 - A foul ball, a ball which has been hit outside of the base lines.
"foul" as verb
1 - To make dirty.
2 - To besmirch.
3 - To clog or obstruct.
