We don't have synonyms for antilia yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are antlia, anticlia and antillia.
(n) :
Alternative form of Antillia. [A phantom island, originating from an Iberian legend, that during 714 AD and the 15th-century age of exploration was said to lie in the Atlantic Ocean, far to the west of Portugal and Spain.]
(n) :
Alternative form of Antillia. [A phantom island, originating from an Iberian legend, that during 714 AD and the 15th-century age of exploration was said to lie in the Atlantic Ocean, far to the west of Portugal and Spain.]