<p><strong>Verb</strong></p><ul><li>mis·fired</li><li>mis·fir·ing</li><li>(of a rifle or gun or of a bullet or shell) to fail to fire or explode</li><li>(of an internal-combustion engine) to fail to ignite properly or when expected</li><li>to fail to achieve the desired result, effect, etc.</li></ul><p><strong>Noun</strong></p><ul><li>an act or instance of misfiring</li></ul>