[n] an unexpected omission; "he resented my failure to return his call"; "the mechanic's failure to check the brakes"
[n] an act that fails; "his failure to pass the test"
[n] an event that does not accomplish its intended purpose; "the surprise party was a complete failure"
[n] a person with a record of failing; someone who loses consistently
[n] loss of ability to function normally; "kidney failure"
[n] lack of success; "he felt that his entire life had been a failure"; "that year there was a crop failure"
[n] inability to discharge all your debts as they come due; "the company had to declare bankruptcy"; "fraudulent loans led to the failure of many banks"