'Opponent' in the Bible

Each one of them seized his opponent by the head and thrust his sword in his opponent’s side; so they fell down together. Therefore that place was called Helkath-hazzurim, which is in Gibeon.

“May my enemy be as the wickedAnd my opponent as the unjust.

Make friends quickly with your opponent at law while you are with him on the way, so that your opponent may not hand you over to the judge, and the judge to the officer, and you be thrown into prison.

For while you are going with your opponent to appear before the magistrate, on your way there make an effort to settle with him, so that he may not drag you before the judge, and the judge turn you over to the officer, and the officer throw you into prison.

There was a widow in that city, and she kept coming to him, saying, ‘Give me legal protection from my opponent.’

sound in speech which is beyond reproach, so that the opponent will be put to shame, having nothing bad to say about us.