Definition of "Powerful" :

adjective: displaying superhuman strength or power

adjective: having great power or force or potency or effect

"The most powerful government in western Europe."

adjective: having great influence

adjective: (of a person) possessing physical strength and weight; rugged and powerful

"Powerful arms."

adjective: strong enough to knock down or overwhelm

adverb: (Southern regional intensive) very; to a great degree

"It is powerful humid."