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 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.
adj 1: 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" [ant: powerless]
2: strong enough to knock down or overwhelm; "a knock-down
blow" [syn: knock-down(a)]
3: having the power to influence or convince; "a cogent
analysis of the problem"; "potent arguments" [syn: cogent,
4: (of a person) possessing physical strength and weight;
rugged and powerful; "a hefty athlete"; "a muscular
boxer"; "powerful arms" [syn: brawny, hefty, muscular,
5: displaying superhuman strength or power; "herculean
exertions" [syn: herculean]
adv : (Southern regional intensive) very; "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" [syn: mighty, right]