ἀντίδικος, -ον, (δίκη); as a substantive ὁἀντίδικος a.an opponent in a suit at law: Matthew 5:25; Luke 12:58; Luke 18:3, (Xenophon, Plato, often in the Attic orators). b. universally, an adversavy, enemy, (Aesehyl. Ag. 41; Sir. 33:9; 1 Samuel 2:10; Isaiah 41:11, etc.): 1 Peter 5:8 (unless we prefer to regard the devil as here called ἀντίδικος because he accuses men before God).
