Definition of "rivalrous"

In “Before the Devil Knows You’re Dead,” Mr. Lumet’s 45th film, Philip Seymour Hoffman and Ethan Hawke play rivalrous brothers whose bungled robbery of their parents’ modest jewelry store in Westchester County begins a cycle of quasi-Greek family tragedy without a catharsis.

2007 October 12, Stephen Holden, “At New York Film Festival: Upheaval in Iran, fiasco in Westchester”, in The New York Times‎, archived from the original on June 5, 2015

Western universalism was real, if rivalrous.

2015 September 12, Steven Erlanger, “Are Western values losing their sway? ”, in The New York Times‎

Rivalrous goods are those which can be consumed by only one person at the same time – for example, a candy bar or a suit; […]

20th–21st century, Thomas A. McGahagan, “Public Goods”, in (Please provide the book title or journal name)‎, Department of Economics, University of Pittsburgh at Johnstown, archived from the original on May 5, 2015