We don't have synonyms for sunnis yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sunni and sunnies.
(adj) :
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.
(n) :
Ellipsis of Sunni Islam. [(Islam) The largest branch of Islam, followed by around 1.7 billion people, whose adherents believe that Muhammad died without appointing a successor, leading to the election of Abu Bakr as the legitimate leader of the Muslim community.]
(adj) :
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.
(n) :
Ellipsis of Sunni Islam. [(Islam) The largest branch of Islam, followed by around 1.7 billion people, whose adherents believe that Muhammad died without appointing a successor, leading to the election of Abu Bakr as the legitimate leader of the Muslim community.]