a. [ Cf. OF. vigoros, F. vigoureux, LL. vigorosus. ] 1. Possessing vigor; full of physical or mental strength or active force; strong; lusty; robust; as, a vigorous youth; a vigorous plant. [ 1913 Webster ]
Famed for his valor, young,
At sea successful, vigorous and strong. Waller. [ 1913 Webster ]
2. Exhibiting strength, either of body or mind; powerful; strong; forcible; energetic; as, vigorous exertions; a vigorous prosecution of a war. [ 1913 Webster ]
The beginnings of confederacies have been always vigorous and successful. Davenant. [ 1913 Webster ]
-- Vig"or*ous*ly, adv. -- Vig"or*ous*ness, n. [ 1913 Webster ]