FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

adikos ἄδικος — ad'-ee-kos — from 1 (as a negative particle) and 1349; unjust; by extension wicked; by implication, treacherous; specially, heathen:--unjust, unrighteous.

see GREEK for 1

see GREEK for 1349