<p><strong>Noun</strong></p><ul><li>an act or instance of failing or proving unsuccessful; lack of success: His effort ended in failure.</li><li>The campaign was a failure.</li><li>nonperformance of something due, required, or expected: a failure to do what one has promised; a failure to appear.</li><li>a subnormal quantity or quality; an insufficiency: the failure of crops.</li><li>deterioration or decay, especially of vigor, strength, etc.: The failure of her health made retirement necessary.</li><li>a condition of being bankrupt by reason of insolvency.</li><li>a becoming insolvent or bankrupt: the failure of a bank.</li><li>a person or thing that proves unsuccessful: He is a failure in his career. The cake is a failure.</li></ul>