1. (

• mightily ,

) powerfully or vigorously; "he strove mightily to achieve a better position in life" ;

2. (

• mighty ,
• mightily ,
• powerful ,
• right ,

) (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" ;