| 1. | to fall short of success or achievement in something expected, attempted, desired, or approved: The experiment failed because of poor planning. |
| 2. | to receive less than the passing grade or mark in an examination, class, or course of study: He failed in history. |
| 3. | to be or become deficient or lacking; be insufficient or absent; fall short: Our supplies failed. |
| 4. | to dwindle, pass, or die away: The flowers failed for lack of rain. |
| 5. | to lose strength or vigor; become weak: His health failed after the operation. |
| 6. | to become unable to meet or pay debts or business obligations; become insolvent or bankrupt. |
| 7. | (of a building member, structure, machine part, etc.) to break, bend, crush, or be otherwise destroyed or made useless because of an excessive load. |
| 8. | to stop functioning or operating: The electricity failed during the storm. |
| 9. | to be unsuccessful in the performance or completion of: He failed to do his duty. |
| 10. | (of some expected or usual resource) to prove of no use or help to: His friends failed him. Words failed her. |
| 11. | to receive less than a passing grade or mark in: He failed history. |
| 12. | to declare (a person) unsuccessful in a test, course of study, etc.; give less than a passing grade to: The professor failed him in history. |
| 13. | Stock Exchange.
|
| 14. | Obsolete. failure as to performance, occurrence, etc. |
| 15. | without fail, with certainty; positively: I will visit you tomorrow without fail. |

Fail
A transaction that has not been settled before a deadline.
Investopedia Commentary
Presently, firms have three days after the date of a trade to settle stock transactions. Within this timeframe, securities and cash must be delivered to the clearing house for settlement. If firms are unable to meet this deadline a fail will occur.
Settlement requirements for stock, options, futures contracts, forwards, and fixed-income securities differ.
Related Links
Understanding Order Execution
The Nitty-Gritty Of Executing A Trade
Futures Fundamentals
Options Basics Tutorial
Bond Basics Tutorial
See also: Aged Fail, Clearing House, Fixed-Income Security, Forward Contract, Futures Contract, Option, SEC, Settlement Date, Trade Date
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