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

 

hullabaloo

 noun
noun
BrE BrE//ˌhʌləbəˈluː//
 
; NAmE NAmE//ˌhʌləbəˈluː//
 
[singular]
 
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a lot of loud noise, especially made by people who are annoyed or excited about something synonym commotion, uproar They looked outside to find out what all the hullabaloo was about. The government can expect a real hullabaloo when these measures are announced. Word Origin mid 18th cent.: reduplication of hallo, hullo, etc.
See the Oxford Advanced American Dictionary entry: hullabaloo