shiitism/ˈʃiːaɪˌtɪz(ə)m/EtymologyFrom Shiite + -ism.shiitism means synonym of Shi'ism. Lexicurio rates it Sui generis — a strength score of 86 out of 100.shiitism is pronounced /ˈʃiːaɪˌtɪz(ə)m/.nounSynonym of Shi'ism.