Synonyms and related words :
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