We don't have synonyms for voltairian yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are voltarean, voltarian and voltairean.
(adj) :
Alternative form of Voltairean. [(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) :
Alternative form of Voltairean. [(philosophy) A person who subscribes to the philosophy of Voltaire.]
(adj) :
Alternative form of Voltairean. [(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) :
Alternative form of Voltairean. [(philosophy) A person who subscribes to the philosophy of Voltaire.]