Strong's #830: authairetos (pronounced ow-thah'-ee-ret-os)
from 846 and the same as 140; self-chosen, i.e. (by implication) voluntary:--of own accord, willing of self.
Thayer's Greek Lexicon:
̓́
authairetos
1) voluntary, of free choice, of one' s own accord
Part of Speech: adjective
Relation: from G846 and the same as G140
Usage:
This word is used 2 times:
2 Corinthians 8:3: "yea, and beyond their power they were willing of themselves;"
2 Corinthians 8:17: "but being more forward, of his own accord he went unto you."