Here's what rhymes with interventionist.

Consider these alternatives

interventionism / given isolationist / conservationist confrontational / educational doctrinaire / their expansionary / very proactive / attractive reactionary / very colonialist / neocolonialist imperialist / materialist imperialistic / characteristic realpolitik / sick unilateralism / given idealist / realist evenhanded / advantage intrusive / inclusive hegemonic / chronic dictatorial / editorial espousing / housing militaristic / characteristic jingoistic / characteristic antagonistic / characteristic