Lexical Definition

‎δωρεάν‎ dōreán (do-reh-an') freely G:ADV
accusative case of ‎δωρεά‎ as adverb

without a cause, freely, for naught, in vain.

Usage: 2 forms in 9 verses
Form Translated As     In Verse(s)
δωρεὰν for naught Gal.2.21
freely Matt.10.8Matt.10.8Rom.3.242Cor.11.7
without payment 2Thess.3.8
δωρεάν freely Rev.21.6Rev.22.17
without cause’ John.15.25

Abbott-Smith

δωρεάν, v.s. δωρεά.

Liddell-Scott-Jones

Included with: δωρεάν-εά,

Ionic dialect δωρεάν-εή, : δωρεάνειά in earlier Attic Inscrr., [δωρεάνεά first in [prev. work] 22.1.68">Refs]:— gift, present, especially bounty (={δόσις ἀναπόδοτος} [δωρεάνεὰν διδόναι [prev. author] 6.130, 4th-5th c.BC: Aeschylus Tragicus “Prometheus Vinctus” 340 ">Refs 5th c.BC+]; πορεῖν[δωρεάνεῖσθαι 5th-6th c.BC: Plato Philosophus “Politicus” 290c ">Refs 5th c.BC+]; δ. δέχεσθαι, λαμβάνειν, [δωρεάνεὰν ἀποδοῦναι 5th c.BC: Antipho Orator 5.34; δ. ἔχειν 5th c.BC: Sophocles Tragicus “Ajax” 1032, 4th c.BC: Demosthenes Orator 18.312; ἐν χάριτος μέρει καὶ δωρεάνειᾶς 4th c.BC: Demosthenes Orator 21.165 ">Refs 5th c.BC+]; δωρεάνειὰν καὶ χάριν [Refs 5th c.BC+]; of a legacy, [Refs 4th c.BC+]; δωρεάνεαί privileges and immunities, opposed to δῶρα, gifts in cash or kind, [Refs 2nd c.AD+]

__2 estate granted by a king, fief, [Refs 3rd c.BC+]
__II accusative δωρεάνεάν as adverb, as a free gift, freely, [LXX+5th c.BC+]; so κατὰ δωρεάνεάν [Refs 1st c.AD+]; ἐν δωρεάνεᾷ προσνεῖμαι [Refs 2nd c.BC+]; but γῆν (ἀμπελῶνα, etc.) ἐν δωρεάνεᾷ ἔχειν to hold land by a royal grant, PRev. Laws [Refs 3rd c.BC+]
__II.2 to no purpose, for naught, [NT]

LSJ Scripture Refs: LXX.Job.1.9Gal.2.21