According to Janusz Bugajski, "in its most extreme or developed forms, ultra-nationalism resembles fascism, marked by a xenophobic disdain of other nations, support for authoritarian political arrangements verging on totalitarianism, and a mythical emphasis on the "organic unity" between a charismatic leader, an organizationally amorphous movement-type party, and the nation".
Roger Griffin asserts that ultranationalism is essentially racist and is known to legitimise itself "through deeply mythicized narratives of past cultural or political periods of historical greatness or of old scores to settle against alleged enemies". It can also draw on "vulgarized forms of physical anthropology, genetics and eugenics to rationalize ideas of national superiority and destiny, of degeneracy and subhumanness".
- Ultranationalism. Oxford English Dictionary. Retrieved 29 June 2017.
- Ultranationalism. Collins English Dictionary. Retrieved 29 June 2017.
- Roger Griffin, "Nationalism" in Cyprian Blamires, ed., World Fascism: A Historical Encyclopedia, vol. 2 (Santa Barbara, California: ABC-CLIO, 2006), pp. 451–53.
- The Politics of National Minority Participation in Post-communist Europe. EastWest Institute. p.65. Section author - Janusz Bugajski. Book edited by Johnathan P.Stein. Published by M.E. Sharpe. Published in New York in 2000. Retrieved via Google Books.
- World fascism: a historical encyclopedia. 2006. p. 452.