εὐτόνως G2159
eutónōs · yoo-ton'-oce · Adverb
adverb from a compound of εὖ and a derivative of (to stretch); in a well-strung manner, i.e. (figuratively) intensely (in a good sense, cogently; in a bad one, fiercely):--mightily, vehemently.
2 Occurrences in the King James Bible
Luke 23:10And the chief priests and scribes stood and vehemently accused him.
Acts 18:28For he mightily convinced the Jews, and that publickly, shewing by the scriptures that Jesus was Christ.