powerful

/ˈpaʊəfl/

adjective

Meaning

Having, or capable of exerting power, potency or influence.
Large; capacious; said of veins of ore.

Synonyms

forceful,

mightful,

mighty,

powersome,

strengthful,

strong

adverb

Meaning

To a great extent or degree.
"Not very many (of them) had been damaged."
Conforming to fact, reality or rule; true.
(with superlatives) Used to firmly establish that nothing else surpasses in some respect.
"He was the very best runner there."

Synonyms

eminently,

ever so,

main,

mighty,

sore,

swith,

way too,

actually,

authentically,

truly,

drastically,

extremely,

greatly