Synonyms for Manichaeanism (same or very similar meaning)
WordNet sense 1 (a religion founded by Manes the third century; a synthesis of Zoroastrian dualism between light and dark and Babylonian folklore and Buddhist ethics and superficial elements of Christianity; spread widely in the Roman Empire but had largely died out by 1000):
ManichaeismFrom the ODE community, based on WordNetadd/edit