expansivist adjective 1noun 1forms 3 adjective1 •Tending toward maximizing the applicability or scope (of something)This expansivist view is presidency-weighted, regarding the maximization of presidential power as virtually the sine qua non of American politics. — 1989 noun1 •One with an expansivist attitude toward or definition of something.Tracing their twentieth century origins back to Wilson and Theodore Roosevelt, expansivists were energized by FDR's leadership. — 1989 formsexpansivists · more expansivist · most expansivist