We don't have synonyms for shahadah yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are shahzada, shahada and shehadeh.
(n) :
Alternative spelling of shahada. [(Islam, especially theosophy) The Islamic declaration of belief in the unity of God, the formal content of which is the kalima (a minimal Islamic creed); the first of the five pillars of Islam.]
(n) :
Alternative spelling of shahada. [(Islam, especially theosophy) The Islamic declaration of belief in the unity of God, the formal content of which is the kalima (a minimal Islamic creed); the first of the five pillars of Islam.]