Definitions:

1. an act that fails noun
   • My failure to pass the test might get me in trouble.
2. an event that does not accomplish its intended purpose noun
   • the surprise party was a complete failure
3. an unexpected omission noun
   • They resented my failure to return their call.
4. lack of success noun
   • I felt that my entire life had been a failure.
5. loss of ability to function normally noun
   • kidney failure

Synonyms:

• bankruptcy
• loser
• nonstarter
• unsuccessful person