Materialistic rhymes with:
imperialistic, imperialistic, antiballistic, ballistic, capitalistic, dualistic, fatalistic, feudalistic, idealistic, imperialistic, individualistic, jelisic, journalistic, legalistic, monopolistic, moralistic, nationalistic, naturalistic, novelistic, paternalistic, pluralistic, pugilistic, realistic, ritualistic, sensationalistic, socialistic
Materialistic sounds like:
meteorologist's, meteorologists