We don't have synonyms for mycenaean yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are mycenean, mycenaen and hymenaean.
°Of or relating to ancient Mycenae or its inhabitants.
°Of or relating to the Mycenaean civilization, the early Greek civilization that spread its influence from Mycenae to many parts of the Mediterranean region and Central Europe from about 2800 to 1100 divided into three periods: Early Helladic (c. 2800-2000 B.C.E), Middle Helladic (c. 2000-1500 B.C.E), and Late Helladic (c. 1500-1100 B.C.E).
°Of or relating to ancient Mycenae or its inhabitants.
°Of or relating to the Mycenaean civilization, the early Greek civilization that spread its influence from Mycenae to many parts of the Mediterranean region and Central Europe from about 2800 to 1100 divided into three periods: Early Helladic (c. 2800-2000 B.C.E), Middle Helladic (c. 2000-1500 B.C.E), and Late Helladic (c. 1500-1100 B.C.E).