Abbott-Smith Manual Greek Lexicon
εὐτόνως (G2159)
2 εὐτόνως adv. ( εὖ , τείνω ), [in LXX for בַּשּׁוֹפָרוֹת Jos 6:7(8) * ;] vigorously, vehemently : Lk 23:10 , Ac 18:28 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain