With great power, force of strength; vigorously; as, to strive mightily.

Vehemently; with great earnestness. Cry mightily to God. Jonah 3:8.

Powerfully; with great energy. Whereto I also labor, striving according to his working, which worketh in me mightily. CoIossians 1:29.

With great strength of argument. He mightily convinced the Jews. Acts 18:28.

With great or irresistible force; greatly; extensively. So mightily grew the word of God and prevailed. Acts 19:20.

With strong means of defense. Fortify the power mightily. Nahum 2:1.

Greatly; to a great degree; very much. I was mightily pleased with a story applicable to this piece of philosophy.