<p><strong>Verb</strong></p><ul><li><p>(used with object)</p><ul><li>to sell more of (a stock, product, etc.) than can be delivered.</li><li>to sell aggressively, as by using high-pressure merchandising techniques.</li><li>to emphasize the good points of excessively and to a self-defeating extent: "She so oversold the picnic that I became convinced I'd have a better time at the movies."</li></ul></li><li><p>(used without object)</p><ul><li>to sell something aggressively.</li><li>to make extreme claims for something or someone.</li></ul></li></ul>