Bourbonism, Nazism, Toryism, backwardness, centralism, collectivism, communism, conservatism, conservativeness, constitutionalism, democratism, die-hardism, extreme right, extreme right wing, extreme rightism, fascism, federalism, feudalism, feudality, governmentalism, imperialism, know-nothingism, laissez-faireism, monarchism, national socialism, neofascism, old school tie, parliamentarianism, parliamentarism, pluralism, political principles, radical rightism, reaction, reactionariness, reactionaryism, republicanism, rightism, social Darwinism, socialism, standpattism, statism, ultraconservatism, unprogressiveness

For further exploring for "royalism" in Webster Dictionary Online