vigorous

Adjective

• strong and active physically or mentally
  • a vigorous old man who spent half of his day on horseback- W.H.Hudson
    

• characterized by forceful and energetic action or activity
  • a vigorous hiker
    
  • gave her skirt a vigorous shake
    
  • a vigorous campaign
    
  • a vigorous foreign policy
    
  • vigorous opposition to the war