<p><strong>Noun</strong></p><ul><li>the upper side or part</li><li>that part of a chart or graph that shows a higher level, especially in price</li><li>an upward trend, as in stock prices</li><li>a positive result</li><li>an encouraging or positive aspect</li></ul><p><strong>Adjective</strong></p><ul><li>going higher, especially in price or worth: This stock has a nice upside potential.</li></ul><p><strong>Preposition</strong></p><ul><li>on or against the side of: Give him a smack upside the head.</li></ul>