mightily, vehemently

Strong’s Dictionary of Greek Words:

Number:
2159 (find all occurrences in KJV Bible)
Greek:
εὐτόνως
Transliteration:
eutonos
Phonic:
yoo-ton’-oce
Meaning:
adverb from a compound of 2095 and a derivative of τείνω (to stretch); in a well-strung manner, i.e. (figuratively) intensely (in a good sense, cogently; in a bad one, fiercely)
KJV Usage:
mightily, vehemently