downsideglossary / DOWNSIDE downside. Securities.1. A downward movement of stock prices.2. The potential of a downward movement in stock prices. Cf. UPSIDE. 词条贡献者 译员李明,毕业于英国顶尖的高级翻译学院,专注翻译各种与调查和白领犯罪辩护有关的法律文件。