Synonym: bad, base, dirty, disgusting, evil, low, nasty, offensive, sinful, smelly, stinking, unfair, vicious, vile, wicked, wrong. Antonym: clean, fair. Similar words: by fair means or foul, soul, joule, would, could, should, four, fourth. Meaning: [faʊl] 
n. an act that violates of the rules of a sport. v. 1. hit a foul ball 2. make impure 3. become or cause to become obstructed 4. commit a foul; break the rules 5. spot, stain, or pollute 6. make unclean 7. become soiled and dirty. adj. 1. highly offensive; arousing aversion or disgust 2. offensively malodorous 3. violating accepted standards or rules 4. (of a baseball) not hit between the foul lines 5. (of a manuscript) defaced with changes 6. characterized by obscenity 7. disgustingly dirty; filled or smeared with offensive matter 8. especially of a ship's lines etc.
n. an act that violates of the rules of a sport. v. 1. hit a foul ball 2. make impure 3. become or cause to become obstructed 4. commit a foul; break the rules 5. spot, stain, or pollute 6. make unclean 7. become soiled and dirty. adj. 1. highly offensive; arousing aversion or disgust 2. offensively malodorous 3. violating accepted standards or rules 4. (of a baseball) not hit between the foul lines 5. (of a manuscript) defaced with changes 6. characterized by obscenity 7. disgustingly dirty; filled or smeared with offensive matter 8. especially of a ship's lines etc. 
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1. No love is foul, no prison fair. 
2. A fair face (but) foul heart.
3. The peacock has fair feathers, but foul feet.
4. Fair without but foul within.
5. No love is foul, nor prison fair.
6. A fair face may hide a foul heart.
7. Fair words and foul deeds cheat wise men as well as fools.
8. Don't cast out the foul water till you bring in the clean.
9. Cast not out the foul water till you bring in the clean.
9. Wish you can benefit from our online sentence dictionary and make progress day by day!
10. The foul smell made her gag.
11. The house was filled with foul odour.
12. Factory chimneys foul the air with smoke.
13. So far, the police do not suspect foul play.
14. Foul play will be severely penalized.
15. Foul drinking water was blamed for the epidemic.
16. In fair weather prepare for foul.
17. The team can't afford to foul up in this game.
18. The chimney is foul.
19. The sailing boat fell foul of a motor speedboat in mid - river.
20. This medicine tastes foul!
21. Owners who allow their dogs to foul the footpath will be fined.
22. He committed a second clear foul and was sent off.
23. The police have ruled out foul play in the case of his death.
24. The report says it suspects foul play was involved in the deaths of two journalists.
25. When foul weather fogged the port, the ships anchored outside.
26. He woke up with a foul taste in his mouth.
27. Those toilets smell foul!
28. Many were shocked by his foul language.
29. Why do some people foul up and become criminals?
30. The police said they had no reason to suspect foul play .
More similar words: by fair means or foul, soul, joule, would, could, should, four, fourth, founder, founded, heart and soul, profound, dumbfound, confounded, foundation, dumbfounded, founding father.