Definition of downfall noun from the Oxford Advanced American Dictionary

 

downfall

 noun
noun
NAmE//ˈdaʊnfɔl//
 
[singular]
 
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the loss of a person's money, power, social position, etc.; the thing that causes this The sex scandal finally led to his downfall. Greed was her downfall.
See the Oxford Advanced Learner's Dictionary entry: downfall