Mafia scowlingly covering up debacle (6)

I believe the answer is:

fiasco

'debacle' is the definition.
(I know that debacle can be written as fiasco)

'mafia scowlingly covering up' is the wordplay.
'covering up' says the answer is hidden in the clue.
'FIASCO' is hidden in the letters of 'mafia scowlingly'.

(Other definitions for fiasco that I've seen before include "Calamity" , "Complete disaster" , "Sudden and complete collapse" , "Farcical disaster" , "Total debacle" .)

I've seen this clue in The Times.

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