most robust

booming hearty hefty potent powerful prosperous sturdy tough vigorous

able-bodied athletic boisterous brawny built concentrated fit fit as fiddle flourishing full-bodied hale hardy husky in fine fettle in good health in good shape in the pink live lusty muscular peppy powerhouse prospering roaring robustious robustuous rough rugged sinewy snappy sound stout strapping thriving tiger vital well wicked zappy zippy

fragile impotent incapable ineffective lethargic small unstable weak wobbly

flabby infirm soft unhealthy