Definition of "Failure" :

noun: an unexpected omission

"He resented my failure to return his call."

noun: an act that fails

"His failure to pass the test."

noun: an event that does not accomplish its intended purpose

"The surprise party was a complete failure."

noun: a person with a record of failing; someone who loses consistently

noun: loss of ability to function normally

"Kidney failure."

noun: lack of success

"He felt that his entire life had been a failure."

noun: inability to discharge all your debts as they come due

"Fraudulent loans led to the failure of many banks."