duff
/dʌf; dʌf/ adj
(Brit sl 俚) worthless or useless 无价值的; 无用的. duff, v (Brit sl 俚)
1 [Tn] mishit (sth), esp in golf; bungle 未击中（某物）（尤指高尔夫球）; 弄糟（某事）
He duffed his drive off the first tee. 他开球第一杆就未击中.
2 (phr v) duff sb up punch or kick sb severely 狠打或狠踢某人.