mad /mæd/ adj. 1.发疯的，发狂的：mad-house疯人院；mad-man 疯人；drive/send sb. mad 逼得人发疯；be mad with joy 欣喜若狂He went mad after the death of his daughter.女儿死后他便疯了。be mad about/for (非正式)狂热的，着迷的：I'm mad about jacket potatoes with lots of butter.我非常爱吃蘸着厚厚黄油的带皮烤土豆。The two brothers are mad about/for chess. 这兄弟俩对象棋着了迷。3. 恼火的，生气的(=angry): be mad at a person 对某人生气