Lexical Definition

‎αὐθαίρετος‎ authaíretos (ow-thah'-ee-ret-os) self-chosen ^G:A
from ‎αὐτός‎ and the same as ‎αἱρετίζω‎

of own accord, willing of self.

• self-chosen, i.e. (by implication) voluntary

Abbott-Smith

** αὐθαίρετος, -ον (< αὐτός, αἱρέομαι), [in Sm.: Ex 35:5, 22*;]
1. self-chosen.
2. of one's own accord: II Co 8:3, 17.†

Abbott-Smith References

Liddell-Scott-Jones

αὐθαίρετος-αίρετος, ον,

self-chosen, self-elected, στρατηγοί[Refs 5th c.BC+]; στεφανηφόρος voluntary, i.e. undertaking the duty at one's own expense, [Refs 2nd c.AD+]. adverb -τως[Refs 1st c.AD+]

__II by free choice, of one-self, [NT+5th c.BC+]; independent, free, εὐβουλία[Refs 5th c.BC+]
__III of things, due to one's own choice, ὄλβος[Refs 5th c.BC+]; usually of evils, self-incurred, πημοναί[αὐθαίρετοςαίρετοι βροτοῖς ἔρωτες 5th c.BC: Euripides Tragicus “Fragmenta” 339; νόσοι.. αἱ μέν εἰσ᾽ αὐ. [prev. work] 292.4">Refs 5th c.BC+]; κίνδυνοι, δουλεία, [Refs 5th c.BC+]. adverb -τως of free choice, [LXX+4th c.AD+]; πείθεσθαί τινι[Refs 1st c.AD+], independently, [Refs 2nd c.AD+]

_{LSJ Scripture Refs: 2Cor.8.17}