a.
1.
Strong, powerful, lusty.
2.
Strong, powerful, energetic, forcible.
3.
Healthy, hale, robust, sturdy, sound, hardy, hearty, in health, in good health.
4.
Thrifty, flourishing, growing well.
5.
Nervous, robust, spirited, lively, sparkling, racy, pointed, piquant, impassioned.