English Alternative forms Sunniism (rare, built on Sunni instead of sunnah) Etymology From sunnah + -ism. Noun Sunnism (uncountable) Sunni Islam In this country, Sunnism forms the majority. Synonyms Bakrism, Bakriyyah, Sunnitism Related terms Sunni Sunnite Wikiwand - on Seamless Wikipedia browsing. On steroids.