American English

Definition of winning adjective from the Oxford Advanced American Dictionary

      

    winning

     adjective
    adjective
    NAmE//ˈwɪnɪŋ//
     
     
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  1. 1[only before noun] that wins or has won something, for example a race or competition the winning horse the winning run
  2. 2[usually before noun] attractive in a way that makes other people like you a winning smile
1
 
adverb
Idioms
somebody's best/strongest/winning card
 
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2something that gives someone an advantage over other people in a particular situation
See the Oxford Advanced Learner's Dictionary entry: winning