foul
adjective
°Covered with, or containing, extraneous matter which is injurious, noxious, offensive, or obstructive; filthy; dirty; not clean; polluted; nasty; defiled; as, a foul cloth; foul hands; a foul chimney; foul air; a ship's bottom is foul when overgrown with barnacles; a gun becomes foul from repeated firing; a well is foul with polluted water.
"Cap'n, she's all fouled up."
°Scurrilous; obscene or profane; abusive; as, foul words; foul language.
"The rascal spewed forth a series of foul pronouncements."
verb
°To make dirty.
"He's fouled her diapers."
°To besmirch.
"He's fouled his reputation."
noun
°A breach of the rules of a game, especially one involving inappropriate contact with an opposing player in order to gain an advantage; as, for example, foot-tripping in soccer, or contact of any kind in basketball.
°A (usually accidental) contact between a bowler and the lane before the bowler has released the ball.