Strong's #1635: hekon (pronounced hek-own')
of uncertain affinity; voluntary:--willingly.
Thayer's Greek Lexicon:
̔́
hekōn
1) unforced, voluntary, willing
2) of one' s own will
3) of one' s own accord
Part of Speech: adjective
Relation: of uncertain affinity
Citing in TDNT: 2:469, 221
Usage:
This word is used 2 times:
Romans 8:20: "was made subject to vanity, not willingly, but by reason of him who hath subjected the same in"
1 Corinthians 9:17: "if I do this thing willingly, I have a reward: but if"