The respondent is the party against whom a petition is filed, especially one on appeal. The respondent can be either the plaintiff or the defendant from the court below, as either party can appeal the decision thereby making themselves the petitioner and their adversary the respondent. Formerly, in the equity courts of common law, the defendant was always called the respondent. See also petitioner.
[Last updated in May of 2024 by the Wex Definitions Team]