Foul

adjective

1. offensive to the senses : loathsome
2. constituting an infringement (see infringe sense 1) of rules in a game or sport
3. being outside the foul lines in baseball
4. containing marked-up corrections
5. full of dirt or mud
6. encrusted, clogged, or choked with a foreign substance
7. placed in a situation that impedes physical movement : entangled
8. homely, uglydialectal British
9. filled or covered with offensive matter
10. being odorous and impure : polluted
11. morally or spiritually odious : detestable
12. notably unpleasant or distressing : wretched, horrid
13. indecent and offensive
14. being wet and stormy
15. obstructive to navigation
16. treacherous, dishonorable