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

 

comedown

 noun
noun
BrE BrE//ˈkʌmdaʊn//
 
; NAmE NAmE//ˈkʌmdaʊn//
 
[usually singular](informal)
 
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a situation in which a person is not as important as before, or does not get as much respect from other people It was a sad comedown for a band that was so popular only a year ago.
See the Oxford Advanced American Dictionary entry: comedown