<p><strong>Noun</strong></p><ul><li>strong or violent change or disturbance, as in a society: the upheaval of war.</li><li>an act of upheaving, especially of a part of the earth's crust.</li><li>the state of being upheaved.</li><li>an upward warping of a part of the earth's crust, forcing certain areas into a relatively higher position than before.</li></ul>