FOULEST

offensive to the senses, especially through having a disgusting smell or taste or being dirty

wicked or immoral

containing or full of noxious matter; polluted

(of the weather) wet and stormy

(in sport) an unfair or invalid stroke or piece of play, especially one involving interference with an opponent

a disease in the feet of cattle

contrary to the rules; unfairly.

make foul or dirty; pollute

(in sport) commit a foul against (an opponent)

collide with or obstruct