Definition of "fratricidal"

Taizong's failure fooled no one. Indeed, one of Taizong's own sons may well have been unhinged by his father's obvious fratricidal and nepoticidal actions. These personal considerations directly affected Taizong's policy decisions, and thus warrant some discussion.

2008, Peter Lorge, “The Great Ditch of China and the Song-Liao Border”, in Don J. Wyatt, editor, Battlefronts Real and Imagined: War, Border, and Identity in the Chinese Middle Period, New York, N.Y.: Palgrave Macmillan, pages 59–74 at 67

At the Lincoln Memorial in Washington, which commemorates the president who urged a fratricidal nation to go forward “with malice toward none, with charity toward all,” the Olipa family debated what’s happened to leadership in America.

2023 March 31, Christa Case Bryant, Henry Gass, Story Hinckley, Sophie Hills, “Sobering moment: Americans reflect on Trump indictment”, in The Christian Science Monitor