American English

Definition of vigorous adjective from the Oxford Advanced American Dictionary

     

    vigorous

     adjective
    adjective
    NAmE//ˈvɪɡərəs//
     
     
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  1. 1 very active, determined, or full of energy synonym energetic a vigorous campaign against tax fraud a vigorous opponent of the government Do vigorous exercise for several hours a week.
  2. 2strong and healthy a vigorous young man This plant is a vigorous grower.
 
adverb She shook her head vigorously. The accusation was vigorously denied.
See the Oxford Advanced Learner's Dictionary entry: vigorous