/ˈmɜ:si ||; ˈmɝsɪ/noun [U] kindness shown by sb/sth who has the power to make sb suffer 慈悲；仁慈；怜悯；宽容: The rebels were shown no mercy. They were taken out and shot. 叛乱分子没有得到宽大处理，全被带出去枪毙。 at the mercy of sb/sth having no power against sb/sth that is strong 任凭…摆布或控制；在…面前无能为力: The climbers spent the night on the mountain at the mercy of the wind and rain. 登山者在山上过夜，经受风吹雨打。