failure Definition

1. The act of failing; lack of success.

Thesaurus: loss, ruin, downfall, collapse, defeat, folding, breakdown, abortion; Antonym: success.
2. Someone or something that is unsuccessful.
3. A stoppage in functioning, eg of a computer, machine, system, etc.
4. A poor result.
5. The non-doing of something.

Example: failure to turn up