foul
US /faʊl/
UK /faʊl/

1.
offensive to the senses, especially through having a disgusting smell or taste or being dirty
:
•
The garbage had a foul odor.
•
He stepped in a puddle of foul water.
1.
a violation of the rules in a sport or game
:
•
The referee called a foul on the player.
•
It was a clear foul, but the referee missed it.
1.
to commit a foul in a sport or game
:
•
He tried to trip his opponent and fouled him.
•
The player was warned not to foul again.