'Unrighteous' in the Bible

Thou shalt not raise a false report: put not thine hand with the wicked to be an unrighteous witness.

Let mine enemy be as the wicked, and he that riseth up against me as the unrighteous.

Deliver me, O my God, out of the hand of the wicked, out of the hand of the unrighteous and cruel man.

Woe unto them that decree unrighteous decrees, and that write grievousness which they have prescribed;

Let the wicked forsake his way, and the unrighteous man his thoughts: and let him return unto the LORD, and he will have mercy upon him; and to our God, for he will abundantly pardon.