If you are stymied by something, you find it very difficult to take action or to continue what you are doing.
例句
Companies have been stymied by the length of time it takes to reach an agreement...由于耗時過長，各公司一直未能達成協議。Relief efforts have been stymied in recent weeks by armed gunmen.最近幾周的救援工作一直受到武裝分子的阻撓。