<p><strong>Noun:</strong></p><ul><li>People, or a group of people, regarded as disreputable or worthless: a pack of riffraff.</li><li>The lowest classes; rabble: the riffraff of the city.</li><li>Trash; rubbish.</li></ul><p><strong>Adjective:</strong></p><ul><li>Worthless, disreputable, or trashy.</li></ul>