dud
noun [ C ]
uk/dʌd/ ussomething that is of no value or that does not work:
So what makes a good investment and what makes a dud?
Five years ago I bought a dishwasher that proved to be a dud from the start.
dud
adjective [ before noun ]
uk/dʌd/ usof no use or value:
The bank accepted 62 cents on the dollar to get the dud loans off its books.