G1556
ἐκδικέω
to avenge
ἐκδικέω, -ῶ (ἔκδικος), [in LXX for פָּקַד, נָקַם, שָׁפַט, etc. ;] __1. to vindicate: with accusative of person(s), Luk.18:3, 5. __2. to avenge: with accusative of person(s), ἑαυτούς, Rom.12:19; with accusative of thing(s), παρακοήν, 2Co.10:6; αἷμα, Rev.6:10 19:2 (Cremer, 203; for exx. from π. in both senses, see MM, Exp., xii).† (AS)
The KJV translates G1556 in the following manner:
avenge (6x), Avenge (2x), avenged (2x), revenge (2x)
Full Thayer's lexicon entry
ἐκδικέω — ekdikéō
ἐκδικέω, ἐκδικῶ; future ἐκδικήσω; 1 aorist ἐξεδίκησα; (ἔκδικος, which see); the Sept. for נָקַם, פָּקַד, שָׁפַט;
a. τινα, to vindicate one's right, do one justice (A. V. avenge): Luk 18:1-43 (1Ma 6:22); τινα ἀπό τίνος, to protect, defend, one person from another, Luk 18:3; ἑαυτόν, to avenge oneself, Rom 12:19.
b. τί, to avenge a thing (i. e. to punish a person for a thing): τήν παρακοήν, 2Co 10:6; τό haima] τίνος ἀπό or ἐκ τίνος, to demand in punishment the blood of one from another, i. e. to exact of the murderer the penalty of his crime (A. V. avenge one's blood on or at the hand of): Rev 6:10; Rev 19:2; see ἐκ, I. 7. (In Greek authors from (Apollod.), Diodorus down.)
6 occurrences
Luke (2), Romans (1), II Corinthians (1), Revelation of John (2)