Vig'or-oüs, a.

a. [O. Fr. & Pr. vigoros, N. Fr. vigoureux, Sp., Pg., & It. vigoroso, L. Lat. vigorous.]

1. Possessing vigor; full of physical strength or active force; strong; lusty; as, a vigorous youth; a vigorous body.
2. Exhibiting strength, either of body or mind; powerful; strong; as, a vigorous attack; vigorous exertions.

The beginnings of confederacies have been vigorous and successful. Davenant.