Synonyms and related words :
absolute, accepted, accustomed, acknowledged, admitted, authoritarian, authoritative, autocratic, average, binding, canonical, commanding, common, commonplace, compelling, compulsory, conclusive, conformable, constrictive, consuetudinary, conventional, current, customary, decisive, decretal, decretive, decretory, dictated, dictating, dictatorial, didactic, directive, dogmatic, entailed, established, ethnocentric, everyday, exceptional, excluding, exclusive, exclusory, familiar, final, fixed, folk, formulary, generally accepted, habitual, hallowed, handed down, hard and fast, hard-and-fast, heroic, hoary, household, immemorial, imperative, imperious, imposed, inadmissible, instructive, insular, inveterate, irrevocable, jussive, legendary, long-established, long-standing, mandated, mandating, mandatory, must, mythological, narrow, normal, normative, obligating, obligatory, obtaining, of long standing, of the folk, official, oral, ordinary, overbearing, parochial, peremptory, popular, preceptive, preclusive, predominating, prescribed, prescript, prevailing, prevalent, preventive, prohibitive, received, recognized, regular, regulation, required, restrictive, rooted, rubric, seclusive, segregative, select, selective, separative, set, snobbish, standard, statutory, stock, time-honored, traditional, tried and true, true-blue, ultimate, understood, universal, unwritten, usual, venerable, vernacular, widespread, without appeal, wonted, worshipful, xenophobic