1. (

• powerful

) having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument" ;

2. (

• knock-down ,
• powerful ,

) strong enough to knock down or overwhelm; "a knock-down blow" ;

3. (

• potent ,
• powerful

) having great influence ;

4. (

• brawny ,
• hefty ,
• muscular ,
• powerful ,
• sinewy

) (of a person) possessing physical strength and weight; rugged and powerful; "a hefty athlete"; "a muscular boxer"; "powerful arms" ;

5. (

• herculean ,
• powerful

) displaying superhuman strength or power; "herculean exertions" ;

1. (

• mighty ,
• mightily ,
• powerful ,
• right ,

) (Southern regional intensive) very; to a great degree; "the baby is mighty cute"; "he's mighty tired"; "it is powerful humid"; "that boy is powerful big now"; "they have a right nice place"; "they rejoiced mightily" ;