Word: heftiest

burly, heavy, sturdy, strapping, bulky, brawny, husky, strong, muscular, large, big, solid, heavily built, well-built, portly, stout, hulking, hunky, beefy, powerful, violent, hard, forceful, mighty, weighty, substantial, massive, ponderous, unwieldy, cumbersome, burdensome, sizable, considerable, stiff, extortionate, excessive, steep, astronomical, whopping, tidy, sizeable, goodish, goodly, respectable, healthy, sinewy