Sunni /ˈsʊni/adjective 1noun 1forms 3 adjective1 •Belonging or relating to the branch of Islam based on the Qur'an, the Kutub al-Sittah (the hadiths which record the Sunnah) and that places emphasis on the Sahabah.I therefore strongly advocate the formation of a local capital but not at Hillah, which is too Sunni and near Baghdad — 2001 noun1 •A follower of Sunni Islam. formsSunnis · more Sunni · most Sunni