mercy/ˋmɝsI; ˈmɜːsi/n [U]1 kindness and willingness to forgive someone 仁慈﹐宽容﹐怜悯: He showed no mercy to anyone. 他对任何人都冷酷无情。2 at the mercy of sb/sth unable to do anything to protect yourself from someone or something 听命于某人/某事物﹐任凭某人/某事物摆布: We were at the mercy of the weather. 我们只有听命于天气。