Adversary in Heb. properly שָׂטָן, satan' (i.e. Satan, as it signifies, when with the article), an opponent, e.g. in war, a foe (1 Kings 5:18; 11:14; 23:25; 1Sa 29:4), in the forum, a plaintiff (Ps 109:6; comp. Zec 3:1-2), or generally a resister (2Sa 19:23), as one that blocks the way (Nu 22:23; comp. ver. 32). In Greek properly ἀντίδικος, one who speaks against us, e.g. in a suit, the complainant (Mt 5:25; Lu 12:50); or, generally, an enemy (Lu 18:3), specially, the Devil (1Pe 5:8). SEE ACCUSER.