Reject or repudiate an authority, person, or court judgment, particularly in the context of law, where it refers to a judge, juror, or prosecutor declaring themselves unable to participate in a court case due to a conflict of interest or lack of impartiality, or objecting to their participation for the same reasons, and it can also mean to refuse to do something or dismiss an appeal.

(intransitive, law) Of a judge, juror, or prosecutor: to declare oneself disqualified from trying a court case due to an actual or potential conflict of interest or lack of impartiality.