Failure (noun)

1. The lack of success in doing or achieving something.
2. The state or condition of not working or functioning properly.
3. The action or fact of failing or not meeting a certain standard.
4. A person or thing that is not successful or does not meet a certain standard.
5. An instance of something not working or not being completed successfully.

Origin:

Middle english: from old french faille, from latin fallacia "deception".

Examples:

1. The failure of the project was a disappointment.
2. The engine failure caused a delay in the flight.
3. She felt like a failure for not getting the job.
4. The company's failure was due to poor management.
5. The failure of the crops was due to the drought.