Quick Definition
αὐθαίρετος, ον Adj of one’s own accord
Strong's Definition
from 846 and the same as 140; self-chosen, i.e. (by implication) voluntary
KJV Usage: of own accord, willing of self
UBS Dictionary of the Greek New Testament
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
αὐθ-αίρετος, -ov, (fr. αὐτός and αἱρέομαι), self-chosen ; in Grk. writ. esp. of states or conditions, as δουλεία, Thue. 6, 40, ete., more rarely of persons; voluntary, of free choice, of one’s own accord, (as στρατηγός, Xen. an. 5, 7, 29, explained § 28 by és ἑαυτὸν ἔληται) : 2 Co. viii. 3, 17.
Mounce Concise Greek Dictionary
αὐθαίρετος authairetos 2x
pr. one who chooses his own course of action; acting spontaneously, of one’s own accord, 2 Cor. 8:3, 17*
Abbott-Smith Greek Lexicon
** αὐθαίρετος, -ον
(< αὐτός, αἱρέομαι), [in Sm.: Ex 35:5, 22*;]
self-chosen.
of one's own accord: II Co 8:3, 17.†
Moulton & Milligan — Vocabulary of the Greek NT
αὐθαίρετος. In OG/S 5838 (i/A.D.) a certain Adrastus is praised as δωρεὰν Kal αὐθαίρετος γυμνασίαρχος, zc. he had provided oil at his own expense for the combatants, and exercised the office voluntarily (see the editor’s note): cf. also the late P Par 2118 (A.D. 616) av@atpérw βουλήσει Kal ἀδόλῳ συνειδήσει. For the adverb see Magn 163!°% πᾶσάν τε
Liddell-Scott-Jones — Greek-English Lexicon
αὐθαίρετος (authairetos) — self-chosen. αὐθ-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[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+]