dead duck
US /dɛd dʌk/
UK /dɛd dʌk/

1.
échec cuisant, cause perdue
a person or thing that is doomed to fail or be unsuccessful
:
•
Without proper funding, the project is a dead duck.
Sans financement adéquat, le projet est un échec cuisant.
•
His political career became a dead duck after the scandal.
Sa carrière politique est devenue un échec cuisant après le scandale.