English

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

 

bugaboo

 noun
noun
BrE BrE//ˈbʌɡəbuː//
 
; NAmE NAmE//ˈbʌɡəbuː//
 
(North American English, informal)
 
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a thing that people are afraid of Word Origin mid 18th cent.: probably of Celtic origin and related to Welsh bwci bo ‘bogey, the Devil’, bwci ‘hobgoblin, a mischievous imp or sprite’ and Cornish bucca.
See the Oxford Advanced American Dictionary entry: bugaboo