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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181. The parents were afraid lest he should fail in the final examination.
182. When he told her she would fail, she swore she would make him eat his words.
183. If you expect to fail, you will fail. It's a self-fulfilling prophecy .
184. The teacher let that careless student off and didn't fail him.
185. Lack of rain coupled with high temperatures caused the crops to fail.
186. The number of people who fail each year is now in single figures.
187. He can ill afford to fail any of his exams.
188. Children can be made to suffer when they fail to match their parents' expectations.
188. Wish you can benefit from our online sentence dictionary and make progress day by day!
189. Henceforth, parties which fail to get 5% of the vote will not be represented in par-liament.
190. A lot of people fail their driving test the first time.
191. His company was about to fail, but the bank saw him through.
192. Hers is a body which every red-blooded male cannot fail to have noticed.
193. Those who fail incline to blame the world for their failure.
194. A few marks either way can make the difference between a pass and a fail.
195. No one could fail to be charmed by the magic of this beautiful city.
196. Just because a bird does not breed one year, it does not follow that it will fail the next.
197. Her work was so bad that I had no choice but to fail her.
198. On the 30th you must without fail hand in some money for Alex.
199. She was disappointed to fail in two of her four subjects.
200. He laid down ten dollars that his brother would fail in the examination.
201. One cannot fail to be struck by the singularity of his sculptures.
202. He was afraid the revolution they had started would fail.
203. Voters can be remarkably forgiving of presidents who fail to keep their campaign promises.
204. If he's got an ounce of common sense, he'll realise that this project is bound to fail.
205. Without your involvement you can't succeed. With your involvement you can't fail. A. P. J. Abdul Kalam 
206. I'd rather attempt to do something great and fail than to attempt to do nothing and succeed. Robert H. Schuller