<p><strong>Verb</strong></p><ul><li>(used without object)<ul><li>to move backward; go back.</li></ul></li></ul><p><strong>Synonyms</strong></p><ul><li>ebb</li><li>lapse</li><li>backslide</li><li>retreat</li><li>revert to revert to an earlier or less advanced state or form.</li></ul><p><strong>Noun</strong></p><ul><li>the act of going back; return.</li><li>the right to go back.</li><li>backward movement or course; retrogression.</li></ul>