KJV Dictionary Definition: mightily
mightily
MI'GHTILY, adv. from mighty. With great power, force of strength; vigorously; as, to strive mightily.
1. Vehemently; with great earnestness.
Cry mightily to God. Jonah 3.
2. Powerfully; with great energy.
Whereto I also labor, striving according to his working, which worketh in me mightily. Col.1.
3. With great strength of argument.
He mightily convinced the Jews. Acts.18.
4. With great or irresistible force; greatly; extensively.
So mightily grew the word of God and prevailed. Acts.19.
5. With strong means of defense.
Fortify the power mightily. Nah.2.
6. Greatly; to a great degree; very much.
I was mightily pleased with a story applicable to this piece of philosophy.
Admissible in colloquial and familiar language.