mesomorphic, muscular - having a robust muscular body-build characterized by predominance of structures (bone and muscle and connective tissue) developed from the embryonic mesodermal layer
brawny, hefty, muscular, powerful, sinewy - (of a person) possessing physical strength and weight; rugged and powerful; "a hefty athlete"; "a muscular boxer"; "powerful arms" Antonym:weak (indirect, via strong)