<p><strong>Noun</strong></p><ul><li>Imitation or enactment, as of something anticipated or in testing.</li><li>The act or process of pretending; feigning.</li><li>An assumption or imitation of a particular appearance or form; counterfeit; sham.</li><li>Psychiatry: a conscious attempt to feign some mental or physical disorder to escape punishment or to gain a desired objective.</li><li>The representation of the behavior or characteristics of one system through the use of another system, especially a computer program designed for the purpose.</li></ul>