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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61. The referee whistled for a foul.
62. The police suspect foul play rather than suicide.
63. We can't afford to foul up this time.
64. Wright was booked for a foul on the goalkeeper.
65. I've had a foul morning.
66. Her husband has a foul temper.
67. Nothing could foul up their militant spirit.
68. The two lovers pledged to stick by each other in fair weather or foul.
69. He picked up his first booking for a 45th-minute foul on Bull.
70. It is not clear what caused the explosion,(sentencedict .com) but the police do not suspect foul play.
71. A foul smell of stale beer permeated the whole building.
72. He was sent off for a blatant foul on Giggs.
73. When he came back, he was in a foul mood.
74. He is worried that his teenage kids will fall foul of the law .
75. Things were going well for her till she fell foul of the director.
76. Watch out - she's been in a foul temper all day.
77. He's in a really foul temper so be careful what you say to him.
78. She's determined to pass the test(sentencedict.com), by fair means or foul.
79. The opposition parties have cried foul at the president's act, seeing it as a violation of democracy.
80. The argument with his mother left Putt in a foul mood.
81. The police never caught him in any criminal activity but he eventually fell foul of the tax authorities.
82. When the Labour party candidate didn't win the election, he cried foul and demanded a recount.
83. Wellor let out a foul oath and hurled himself upon him.
84. If a referee allows a foul like that to go unpunished he's asking for trouble.
85. When everything is running smoothly, why must he step in and foul thing up?
86. She claimed she had been subjected to abuse and foul language.
87. Collins was in a foul mood even before the interviews began.
88. They had been called in to clear drains after local people reported a foul smell.
89. Why are you in such a foul mood this morning?
90. Always carry foul weather gear when you go out walking.
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.