WordNet sense 1 (strong enough to knock down or overwhelm):

knock-down

WordNet sense 2 ((of a person) possessing physical strength and weight; rugged and powerful):

brawny, hefty, sinewy

WordNet sense 3 (having strength or power greater than average or expected):

strong

WordNet sense 4 (having or exercising influence or power):

influential

WordNet sense 5 (powerful):

puissant

WordNet sense 6 (having or wielding force or authority):

potent

WordNet sense 7 (having or suggesting great physical power or force):

muscular

WordNet sense 8 (having or showing great strength or force or intensity):

mighty

WordNet sense 9 (driving or forcing):

compelling

WordNet sense 10 (having unlimited power):

omnipotent

WordNet sense 11 (displaying superhuman strength or power):

herculean

WordNet sense 12 (above or beyond the human or demanding more than human power or endurance):

superhuman

WordNet sense 13 ((Southern regional intensive) very):

right