ultranationalismEnglishOxford New American Dictionaryultranationalism /ˌəltrəˈnaSHənəˌlizəm, ˌəltrəˈnæʃənəˌlɪzəm / ▸ noun extreme nationalism that promotes the interests of one state or people above all others: the president is fanning the flames of ultranationalism. – DERIVATIVES ultranationalist ,ultranationalistic