Definition of debacle noun from the Oxford Advanced Learner's Dictionary

 

debacle

 noun
noun
BrE BrE//deɪˈbɑːkl//
 
; NAmE NAmE//deɪˈbɑːkl//
 
; BrE BrE//dɪˈbɑːkl//
 
; NAmE NAmE//dɪˈbɑːkl//
 
 
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an event or a situation that is a complete failure and causes embarrassment He should take responsibility for the debacle and resign. Let’s hope this is the end of the debacle over player transfer fees. Word Origin early 19th cent.: from French débâcle, from débâcler ‘unleash’, from dé- ‘un-’ + bâcler ‘to bar’ (from Latin baculum ‘staff’).
See the Oxford Advanced American Dictionary entry: debacle