(a.) Of or pertaining to mythology or to myths; mythical; fabulous.

acknowledged admitted allegoric conventional customary established fabulous fictional fictitious fictive figmental fixed folk hallowed handed down heroic hoary immemorial inveterate legendary long-established long-standing make-believe mythic mythicized mythified mythopoeic mythopoetic nonactual nonfactual nonrealistic of long standing of the folk oral parabolic prescriptive received recognized romantic romanticized rooted time-honored traditional tried and true true-blue understood unwritten venerable worshipful