IPA: /dɪˈbɑː.kəl/
KK: /dɪˈbɑːkl/
A sudden and complete failure or collapse, often in a way that is embarrassing or ridiculous.
The project turned into a debacle when the team missed all their deadlines.
Debacle comes from the French word *débâcle*, meaning a breaking up or a collapse, which itself is derived from the verb *débâcler*, meaning to unbar or to free. The word originally referred to the breaking up of ice in a river, leading to a flood or disaster.
Imagine a river breaking up and causing a flood — that's how you can remember that a debacle refers to a sudden disaster or collapse.
No commonly confused words.