Feudalistic rhymes with:
antiballistic, ballistic, capitalistic, dualistic, fatalistic, idealistic, imperialistic, individualistic, jelisic, journalistic, legalistic, materialistic, monopolistic, moralistic, nationalistic, naturalistic, novelistic, paternalistic, pluralistic, pugilistic, realistic, ritualistic, sensationalistic, socialistic
Feudalistic sounds like:
fatalistic, fatalists, footlights