POWERFUL
herculean, powerful
(adjective) displaying superhuman strength or power; “herculean exertions”
powerful
(adjective) 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”
potent, powerful
(adjective) having great influence
brawny, hefty, muscular, powerful, sinewy
(adjective) (of a person) possessing physical strength and weight; rugged and powerful; “a hefty athlete”; “a muscular boxer”; “powerful arms”
powerful, knock-down(a)
(adjective) strong enough to knock down or overwhelm; “a knock-down blow”
mighty, mightily, powerful, right
(adverb) (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”
Source: WordNet® 3.1
Etymology
Adjective
powerful (comparative more powerful or powerfuller or powerfuler, superlative most powerful)
Having, or capable of exerting power, potency or influence.
(mining) Large; capacious; said of veins of ore.
Synonyms
• mightful
• mighty
• powersome
• strengthful
• strong
• forceful
Antonyms
• powerless
• strengthless
Adverb
powerful (comparative more powerful, superlative most powerful)
(Southern US) synonym of very
Anagrams
• powreful
Source: Wiktionary
Pow"er*ful, a.
1. Full of power; capable of producing great effects of any kind;
potent; mighty; efficacious; intense; as, a powerful man or beast; a
powerful engine; a powerful argument; a powerful light; a powerful
vessel.
The powerful grace that lies In herbs, plants, stones, and their true
qualities. Shak.
2. (Mining)
Definition: Large; capacious; -- said of veins of ore.
Syn.
– Mighty; strong; potent; forcible; efficacious; energetic;
intense.
– Pow"er*ful*ly, adv.
– Pow"er*ful*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition