fouler

/ˈfaʊl.ə//ˈfaʊl.ɚ/

adjective

1
Covered with, or containing unclean matter; dirty.
“A ship's bottom is foul when overgrown with barnacles”
2
(of words or a way of speaking) obscene, vulgar or abusive.
“His foul language causes many people to believe he is uneducated.”
3
Detestable, unpleasant, loathsome.
“He has a foul set of friends.”
4
Disgusting, repulsive; causing disgust.
“There was a foul smell coming from the toilet.”
5
Ugly; homely; poor.
6
(of the weather) Unpleasant, stormy or rainy.
“Some foul weather is brewing.”
7
Dishonest or not conforming to the established rules and customs of a game, conflict, test, etc.
“Foul play is not suspected.”
8
Entangled and therefore restricting free movement, not clear.
“We've got a foul anchor.”
9
Outside of the base lines; in foul territory.
“Jones hit foul ball after foul ball.”