(adj): vs. ectomorphic) (vs. endomorphic), muscular -- (having a robust muscular body-build characterized by predominance of structures (bone and muscle and connective tissue) developed from the embryonic mesodermal layer
(adj): having a sturdy and well proportioned body
(adj): having or suggesting great physical power or force
(adj): vs. powerless) -- (having great power or force or potency or effect
(adj): (of a person) possessing physical strength and weight; rugged and powerful
(adj): vs. weak) -- (having strength or power greater than average or expected