WordNet sense 1 ((of a person) possessing physical strength and weight; rugged and powerful):

brawny, muscular, powerful, sinewy

WordNet sense 2 (having strength or power greater than average or expected):

strong

WordNet sense 3 (of comparatively great physical weight or density):

heavy

WordNet sense 4 (large in amount or extent or degree):

goodly, respectable, sizable, sizeable, tidy, goodish