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adverse party

n. (context legal English) The opposing party in a lawsuit under an adversary system of law; adversary.

Wikipedia
Adverse party

An adverse party is an opposing party in a lawsuit under an adversary system of law. In general, an adverse party is a party against whom judgment is sought. For example, the adverse party for a defendant is the plaintiff.

In a civil law case, there can be one or more adverse parties.

Usage examples of "adverse party".

I've lost the adverse party and he's gone to ground and nothing can stop him setting up the kill.

Whether any demonstration of the adverse party had been intended can never be known.

The adverse party did the same, but not in such good order, being unprepared.

He used to be with the Liaison Group and I'd worked three times under his direction, then they sent him to Rome on the Carosio thing and one of the adverse party found him alone and left him for dead.

Assumptions were unreliable: I assumed that there was an adverse party working the same field as Merrick and I and feeding the Polanski unit with doped info until its turn came to be wiped out and I assumed that the K.