- (law) The situation where a person sues another person (friend) purely to settle a point of (unsettled) law.
- 2007, Norman Redlich, John B. Attanasio, & Joel K. Goldstein, Understanding Constitutional Law, →ISBN:
- Federal courts cannot adjudicate a friendly suit, collusively arranged between non-adverse parties to obtain the judicial resolution of some constitutional issue.
- 2015, Kate Mayfield, The Undertaker's Daughter, →ISBN, page 293:
- The summer after my freshman year in college, four years after the death of Miss Agnes, my father's bank filed a friendly suit against him to receive the court's interpretation of Miss Agnes's will.