STEP Greek Lexicon: ἔκδικος

ἔκδικος, -ον

(δίκη), [in LXX: Wis.12:12, Sir.30:6, 4Ma.15:29 * ;]

__1. without law, unjust.

__2. exacting penalty from; as subst., an avenger: Rom.13:4; before περί, 1Th.4:6 (in π., a legal representative; Milligan, Th., l.with).†

(AS)