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Definition of super-duper adjective from the Oxford Advanced Learner's Dictionary

super-duper

adjective
 
/ˌsuːpə ˈduːpə(r)/
 
/ˌsuːpər ˈduːpər/
(old-fashioned, informal)
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  1. excellent
See super-duper in the Oxford Advanced American Dictionary
previously
adverb
 
 
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