Extended Strong's Greek Lexicon (Abbott-Smith based)
to rebuke
Usage: ἐλέγχω [in LXX chiefly for יָכַח hi. ;] __1. in Hom., to treat with contempt. __2. to convict: with accusative, Mat.18:15 (RV, show him his fault), Tit.1:9; before περί, Jhn.8:46 16:8, Ju 15; pass., Jas.2:9. __3. to reprove, rebuke: 1Ti.5:20, 2Ti.4:2, Tit.1:13 2:15, Rev.3:19; pass., before περί, Luk.3:19; ὑπό, Heb.12:5 (LXX). __4. to expose: Eph.5:11; pass., Jhn.3:20, 1Co.14:24 (RV reprove, mg. convict), Eph.5:13 (RV, as 1 Co, l.with, of. AR on Eph.5:11; MM, Exp., xii; cf.
ἐξ-, δια-κατ-ελέγχομαι).† SYN.: ἐπιτιμῶ, expressing simply rebuke, which may be undeserved (Mat.16:22) or ineffectual (Luk.23:40), while ἐλ. implies rebuke which brings conviction (see Tr., Syn., § iv) (AS)