English

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

 

bummer

 noun
noun
BrE BrE//ˈbʌmə(r)//
 
; NAmE NAmE//ˈbʌmər//
 
a bummer [singular] (informal)
 
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a disappointing or unpleasant situation It's a real bummer that she can't come. Word Origin mid 19th cent.: perhaps from German Bummler, from bummeln ‘stroll, loaf about’.
See the Oxford Advanced American Dictionary entry: bummer