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Definition of one-upmanship noun from the Oxford Advanced Learner's Dictionary

one-upmanship

noun
 
/wʌn ˈʌpmənʃɪp/
 
/wʌn ˈʌpmənʃɪp/
[uncountable] (disapproving)
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  1. the skill of getting an advantage over other people
See one-upmanship in the Oxford Advanced American Dictionary
trait
noun
 
 
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B2
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