We don't have synonyms for voltairean yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are voltaire, voltarean and voltarian.
(adj) :
(philosophy) Of or pertaining to François-Marie Arouet (1694-1778; pen name "Voltaire"), French writer, essayist, and philosopher known for his wit and defence of civil liberties.
(n) :
(philosophy) A person who subscribes to the philosophy of Voltaire.
(adj) :
(philosophy) Of or pertaining to François-Marie Arouet (1694-1778; pen name "Voltaire"), French writer, essayist, and philosopher known for his wit and defence of civil liberties.
(n) :
(philosophy) A person who subscribes to the philosophy of Voltaire.