| adjective | having great power or force or potency or effect “the most powerful government in western Europe” |
| adjective | strong enough to knock down or overwhelm “a knock-down blow” |
| adjective | having great influence |
| adjective | (of a person) possessing physical strength and weight; rugged and powerful “a hefty athlete” |
| adjective | displaying superhuman strength or power “herculean exertions” |
| adverb | (Southern regional intensive) very; to a great degree “the baby is mighty cute” |
| powerfulness | noun | possession of controlling influence |
| brawn | noun | possessing muscular strength |
| brawniness | noun | possessing muscular strength |
| heft | noun | the property of being large in mass |
| heftiness | noun | the property of being large in mass |
| muscle | noun | possessing muscular strength |
| muscularity | noun | possessing muscular strength |
| sinew | noun | possessing muscular strength |
| Hercules | noun | (classical mythology) a hero noted for his strength; performed 12 immense labors to gain immortality |