mightily

adverbs

powerfully or vigorously
"he strove mightily to achieve a better position in life"
mightily
(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"
mightily, mighty, powerful, right