mighty

adjectives

having or showing great strength or force or intensity
"struck a mighty blow"; "the mighty logger Paul Bunyan"; "the pen is mightier than the sword"- Bulwer-Lytton
is derived from
is derived from
is similar to
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"

adverbs

(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"