Definition of triumphant adjective from the Oxford Advanced American Dictionary

     

    triumphant

     adjective
    adjective
    NAmE//traɪˈʌmfənt//
     
     
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  1. 1very successful in a way that causes great satisfaction They emerged triumphant in the September election.
  2. 2showing great satisfaction or joy about a victory or success a triumphant smile
triumphantly
 
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adverb “I was right,” he said triumphantly.
See the Oxford Advanced Learner's Dictionary entry: triumphant