in·fir·mi·ty /ɪnˈfɜːmətɪ/ n. 1. 体弱,虚弱 old age and infirmity 年老体弱 2. 疾病,病症 the infirmities of age 老年疾病 His infirmities withheld him from the personal administration of his office. 体弱多病使他不能亲自料理公务。 3. (意志等的)薄弱;弱点;缺点 A friend should bear his friend's infirmities. 一个朋友应该对他朋友的弱点多加包涵。