ˈmīd.] ə l]ē -īt], ]ə̇l], ]i adverb
Etymology: Middle English, from Old English mihtiglīce, from mihtig mighty + -līce -ly — more at mighty
1. : in a mighty manner : earnestly , vigorously , powerfully
strove mightily to impress a customer with the book's merits — Bennett Cerf
2. : to a great degree : very much
can help you mightily in all your relations with others — W.J.Reilly
mightily important was the sex of a child in the imperial family — P.I.Wellman