WordNet (r) 3.0 (2006):

Nazism
    n 1: a form of socialism featuring racism and expansionism and
         obedience to a strong leader [syn: Nazism, Naziism,
         national socialism]

Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "Nazism":
   centralism, collectivism, communism, constitutionalism,
   democratism, fascism, federalism, feudalism, feudality,
   governmentalism, imperialism, monarchism, national socialism,
   neofascism, parliamentarianism, parliamentarism, pluralism,
   political principles, republicanism, royalism, socialism,
   statism