foul
/ˈfau̇(-ə)l/
adjective
offensive to the senses : loathsome
filled or covered with offensive matter
being odorous and impure : polluted
the foul odor of rotten eggs
foul bins of filth
noun
an infringement of the rules in a game or sport
free throw
foul ball
verb
to make foul: such as
to make dirty : pollute
to tangle or come into collision with