Matthew 18:15ἁμαρτήσῃ
If your brother sins against you, go and confront him privately. If he listens to you, you have won your brother over.
Luke 17:3ἁμάρτῃ
Watch yourselves. If your brother sins, rebuke him; and if he repents, forgive him.
John 5:14ἁμάρτανε
Afterward, Jesus found the man at the temple and said to him, “See, you have been made well. Stop sinning, or something worse may happen to you.”
Romans 2:12ἥμαρτον
All who sin apart from the law will also perish apart from the law, and all who sin under the law will be judged by the law.
1 Corinthians 8:12ἁμαρτάνοντες
By sinning against your brothers in this way and wounding their weak conscience, you sin against Christ.
1 John 2:1ἁμάρτῃ
My little children, I am writing these things to you so that you will not sin. But if anyone does sin, we have an advocate before the Father—Jesus Christ, the Righteous One.

Abbott-Smith

ἁμαρτάνω
(present formed from aor. ἁμαρτεῖν), [in LXX for חָטָא, also for אָשַׁם, רָשַׁע, etc. ;]

1. to miss the mark (Hom., Æsch., al.), hence metaphorically (Hom., al.), to err, do wrong

2. In LXX and NT, to violate God's law, to sin (for non-Christian exx., see MM, VGT, see word): absol., Mat.18:25 27:4, Luk.17:3, Jhn.5:14 8:11 9:2-3 Rom.2:12 3:23 5:12, 14 5:16 6:15, 1Co.7:28 7:36 15:34, Eph.4:26, 1Ti.5:20, Tit.3:11, Heb.3:17 10:26, 1Pe.2:20, 2Pe.2:4 2:4 1Jn.1:10 Jn 2:1 Jn 3:6-9 Jn 5:18; with cogn. accusative, ἁ. ἁμαρτίαν (cf. Exo.32:30, חֲטָאָה חָטָא), 1Jn.5:16; before εἰς, Mat.18:21, Luk.15:18, 21 17:4, Act.25:8 (καίσαρα). 1Co.6:18 8:12 (Field, Notes, 173); ἐνώπιον, Luk.15:18, 21; πρὸς θάνατον (cf. Num.18:22, מוּת חֵטְא), 1Jn.5:16 (Cremer, 98, 633).†
(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.