Synonym: decline, fade, flunk, lose out, neglect, weaken. Antonym: succeed. Similar words: fail to, faint, unfair, affair, fairly, fair play, sail, rail. Meaning: [feɪl] 
v. 1. fail to do something; leave something undone 2. be unsuccessful 3. disappoint, prove undependable to; abandon, forsake 4. stop operating or functioning 5. be unable 6. judge unacceptable 7. fail to get a passing grade 8. fall short in what is expected 9. become bankrupt or insolvent; fail financially and close 10. prove insufficient 11. get worse.
v. 1. fail to do something; leave something undone 2. be unsuccessful 3. disappoint, prove undependable to; abandon, forsake 4. stop operating or functioning 5. be unable 6. judge unacceptable 7. fail to get a passing grade 8. fall short in what is expected 9. become bankrupt or insolvent; fail financially and close 10. prove insufficient 11. get worse. 
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61. The plan was doomed to fail by their refusal to give it any financial support.
62. If you fail to oil the engine regularly, it would seize up without warning.
63. We fail to preach down the people.
64. To fail was considered despicable.
65. I want that work finished by tomorrow, without fail!
66. A poor contact causes power to fail occasionally.
67. There's no risk of her failing/that she'll fail.
68. Some manage it. Some fail miserably.
69. It was fated that they should fail.
70. It's my own lookout if I fail this exam.
71. The new policies fail to accommodate the disabled.
72. He attended every meeting without fail.
73. Tim visits his mother every day without fail.
74. I want you here by two o'clock without fail.
75. He writes every week without fail.
76. Difficulties arise when people fail to consult their colleagues.
77. I foreboded that I might fail.
78. Their attempts will most assuredly fail.
79. If you fail, don't punish yourself.
80. He won't allow himself to fail.
81. I got three passes and one fail.
82. Those who fail to register risk severe penalties.
83. Their antics never fail to amuse.
84. Some schools fail to set any homework.
85. When money is in short supply many businesses fail.
86. I got a fail in history.
87. I had three passes and one fail.
88. Miss another class and you'll fail.
89. The show didn't just fail,[www.Sentencedict.com] it failed spectacularly.
90. Intelligent as you are, I suspect you will fail.