Quick Definition
ἔχθρα, ας, ἡ n.f. enmity, hostility
Strong's Definition
feminine of 2190; hostility; by implication, a reason for opposition
KJV Usage: enmity, hatred
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
ἔχθρα, -as, 7, (fr. the adj. ἐχθρός), enmity: Lk. xxiii. 12; Eph. ii. 14 (15), 16; plur. Gal. v. 20; ἔχθρα (Lchm. ἐχθρά fem. adj. [Vulg. inimica]) θεοῦ, towards God, Jas. iv. 4 (where Tdf. τῷ θεῷ) ; εἰς θεόν, Ro. viii. 7; by meton. i. q. cause of enmity, Eph. ii. 14 (15) [but cf. Meyer. (From Pind. down.) ]
Mounce Concise Greek Dictionary
ἔχθρα echthra 6x
enmity, discord, feud, Lk. 23:12; Gal. 5:20; alienation, Eph. 2:14, 16; a principle or state of enmity, Rom. 8:7; Jas. 4:4*
Abbott-Smith Greek Lexicon
ἔχθρα, -ας, ἡ
(< ἐχθρός), [in LXX for אֵיבָה, שִׂנְאָה, etc.;]
enmity: Lk 23:12, Ro 8:7, Ga 5:20, Eph 2:15, 16, Ja 4:4.†
Moulton & Milligan — Vocabulary of the Greek NT
ἔχθρα. P Hib I. 170 (B.c. 247) ἵνα μὴ ἀντὶ φιλίας ἔχθραν [ποώ]μεθα, P Oxy XII. 1588 (early iv/a.D.) ἡ φιλικὴ σχέσις πρὸς σὲ καὶ τὸν υἱόν σου ἐλπίζει] μεγάλη[ν] ἔχθραν γενέσθαι. For the form ἔκθρα cf. the royal ordinance P Tebt I. 525° (B.c. 118) where it is enacted that no one shall be arrested πρὸς ἴδιον ὀφείλημα ἢ ἀδίκημα μηδὲ ἰδίας ἔκθρας ἕνεκεν, ‘‘for a private debt or offence or owing to a private quarrel” (Edd.), and BGU II. 3898 (ili/a.D.) (as amended Ρ. 356) τὴν ἔκθραν καὶ παρανομίαν : see also 5.v. ἐχθρός.
Liddell-Scott-Jones — Greek-English Lexicon
ἔχθρα (echthra) — hostility. ἔχθρ-α, Ionic dialect ἔχθρη, ἡ, hatred, enmity, [Refs 5th c.BC+]: in philosophical sense, ={νεῖκος}[Refs 3rd c.AD+]; ἔ. τινός hatred for, enmity to one, [NT+5th c.BC+]; δι᾽ ἔχθρας μολεῖν, ἀφῖχθαί τινι, to be at feud with one, [Refs 5th c.BC+]; πρὸς ἔχθραν from personal enmity, [Refs 4th c.BC+]; ἔ. συμβάλλειν, συνάπτειν τινί, to engage in hostility with.., [Refs 5th c.BC+], of undying hatred, [Refs 5th c.BC+]