VIGOROUS
vigorous
(adjective) 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”
vigorous
(adjective) strong and active physically or mentally; “a vigorous old man who spent half of his day on horseback”- W.H.Hudson
Source: WordNet® 3.1
Etymology
Adjective
vigorous (comparative more vigorous, superlative most vigorous)
Physically strong and active.
Mentally strong and active.
Rapid of growth.
Source: Wiktionary
Vig"or*ous, a. Etym: [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.
Famed for his valor, young, At sea successful, vigorous and strong.
Waller.
2. Exhibiting strength, either of body or mind; powerful; strong;
forcible; energetic; as, vigorous exertions; a vigorous prosecution
of a war.
The beginnings of confederacies have been always vigorous and
successful. Davenant.
– Vig"or*ous*ly, adv.
– Vig"or*ous*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition