informal <非正式>
1
- a thing that fails to work properly or is otherwise unsatisfactory or worthless易出故障的东西; 不中用的东西, 无价值的东西：
all three bombs were duds.
所有三枚炸弹都是哑弹。
1.1
- an ineffectual person无用的人, 不称职的人。
2
duds
clothes衣服：buy yourself some new duds.
给你自己买些新衣服。
1
- not working or meeting standards; faulty失灵的, 出故障的; 不合格的; 有缺点的：
a dud ignition switch.
一个坏了的点火开关。
1.1
- counterfeit伪造的：
charged with issuing dud cheques.
被控开假支票。
词源
Middle English (in the sense item of clothing)： of unknown origin.