<p><strong>Verb (used with object)</strong></p><ul><li>demonstrated</li><li>demonstrating</li><li>to make evident or establish by arguments or reasoning; prove: to demonstrate a philosophical principle.</li><li>Synonyms: corroborate, verify, confirm, show</li><li>to describe, explain, or illustrate by examples, specimens, experiments, or the like: to demonstrate the force of gravity by dropping an object.</li><li>to manifest or exhibit; show: He demonstrated his courage by his actions in battle.</li><li>to display openly or publicly, as feelings: to demonstrate one's anger by slamming a door.</li><li>to exhibit the operation or use of (a device, process, product, or the like), usually to a purchaser or prospect: to demonstrate an automobile.</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>demonstrated</li><li>demonstrating</li><li>to make, give, or take part in, a demonstration: The pickets required a license to demonstrate.</li><li>Military: to attack or make a show of force to deceive an enemy.</li></ul>