Quick Definition
I sin previously
Strong's Definition
to sin previously (to conversion)
Derivation: from G4253 (πρό) and G264 (ἁμαρτάνω);
KJV Usage: sin already, heretofore sin
Thayer's Greek Lexicon
προαμαρτάνω: perfect participle προημαρτηκως; to sin before: οἱ προημαρτηκοτες, of those who before receiving baptism had been guilty of the vices especially common muong the Gentiles, 2Co_12:21; 2Co_13:2; in this same sense also in Justin Martyr, Apology i. e. 61; Clement of Alexandria, strom. 4, 12; cf. Lücke, Conjectanea Exeget. I. (Götting. 1837), p. 14ff (but on the reference of the προ( see Meyer on 2 Cor. the passages cited (R. V. heretofore)). (Herodian, 3, 14, 18 (14 edition, Bekker); ecclesiastical writings.)
Mounce Concise Greek Dictionary
προαμαρτάνω proamartanō 2x
to sin before; perf., to have already sinned, have sinned heretofore, 2Co_12:21 ; 2Co_13:2
Abbott-Smith Greek Lexicon
† προ -αμαρτάνω ,
to sin before: 2Co_12:21 ; 2Co_13:2 .†
Moulton & Milligan — Vocabulary of the Greek NT
προαμαρτάνω [page 537]
sin before ( 2Co_12:21 ; 2Co_13:2 ) : cf. OGIS 75 .10 (ii/B.C.) θεωρῶν οὖν ὑμᾶς μετανενοηκότας τε ἐπὶ τοῖ [ς ] προημαρτημένοις , with Dittenberger s notes.
Liddell-Scott — Intermediate Greek Lexicon
προαμαρτάνω fut. α^μαρτήσομαι aor2 -ήμαρτον "to fail or sin before", NTest.
STEPBible — Tyndale Abridged Greek Lexicon
προ-αμαρτάνω
to sin before: 2Co.12:21 13:2.†
(AS)