dead duck
noun
- informal a person or thing that is defunct or has no chance of success〈非正式〉无用的人（或事物）, 死定了的人（或事物）, 必将完蛋者：
the idea of a third TV channel is now a dead duck.
关于第三个电视频道的想法现在肯定没戏。
词源
from the old saying 'never waste powder on a dead duck'.