We don't have synonyms for aulis yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are allis, aulic and caulis.
(n) :
(historical) An ancient port town in Boeotia, Greece, where, according to legend, the Greek fleet gathered to set off for Troy, and where Agamemnon sacrificed his daughter Iphigenia.
(n) :
(historical) An ancient port town in Boeotia, Greece, where, according to legend, the Greek fleet gathered to set off for Troy, and where Agamemnon sacrificed his daughter Iphigenia.