Matthew 5:43ἐχθρόν
You have heard that it was said, ‘Love your neighbor’ and ‘Hate your enemy.’
Luke 1:74ἐχθρῶν
deliverance from hostile hands, that we may serve Him without fear,
Acts 2:35ἐχθρούς
until I make Your enemies a footstool for Your feet.”’
Romans 5:10ἐχθροὶ
For if, when we were enemies of God, we were reconciled to Him through the death of His Son, how much more, having been reconciled, shall we be saved through His life!
1 Corinthians 15:25ἐχθροὺς
For He must reign until He has put all His enemies under His feet.
Hebrews 1:13ἐχθρούς
Yet to which of the angels did God ever say: “Sit at My right hand until I make Your enemies a footstool for Your feet”?

Abbott-Smith

ἐχθρός, -ά, -όν
(ἔχθος, hatred), [in LXX chiefly for אֵיבָה, also for עָר, etc. ;]

1. hated, hateful (Hom.): opposite to ἀγαπητός, Rom.11:28.

2. Actively, hating, hostile: Rom.5:10, 1Co.15:25, 2Th.3:15; with genitive of person(s) (cl.), Jas.4:4; τ. διανοίᾳ, Col.1:21; ἐ. ἄνθρωπος, Mat.13:28; as subst., ὁ ἐ., an enemy, 1Co.15:26; the devil, Mat.13:39, Luk.10:19; with genitive of person(s), Mat.22:44 Mrk.12:36, Luk.20:43, Act.2:35, 1Co.15:25, Heb.1:13 10:13" (LXX) ; Mat.5:43-44 10:36 13:25, Luk.1:71, 74 6:27, 35 19:27, 43, Rom.12:20, Gal.4:16, Rev.11:5, 12; with genitive of thing(s), Act.13:10, Php.3:18.†
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.