—n. 1. a person, group, or force that opposes or attacks; opponent; enemy; foe.
2. a person, group, etc., that is an opponent in a contest; contestant.
3. the Adversary,the devil; Satan.
—adj.Also,esp. Brit.,ad•ver•sar•i•alPronunciation: (ad"vur•sâr'ē•ul).[key] 1. of or pertaining to an adversary.
2. involving adversaries, as plaintiff and defendant in a legal proceeding: an adversary trial.