American English

Definition of mumbo-jumbo noun from the Oxford Advanced American Dictionary

 

mumbo-jumbo

 noun
noun
NAmE//ˌmʌmboʊ ˈdʒʌmboʊ//
 
[uncountable] (informal) (disapproving)
 
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language or a ceremony that seems complicated and important but is actually without real sense or meaning; nonsense religious/medical/bureaucratic mumbo-jumbo I won't have anything to do with spiritualism, ghosts and all that mumbo-jumbo.
See the Oxford Advanced Learner's Dictionary entry: mumbo-jumbo