common
1 a dime a dozen, average, bog-standard (Brit. & Irish slang) commonplace, conventional, customary, daily, everyday, familiar, frequent, general, habitual, humdrum, obscure, ordinary, plain, regular, routine, run-of-the-mill, simple, standard, stock, usual, vanilla (slang) workaday
2 accepted, general, popular, prevailing, prevalent, universal, widespread
3 collective, communal, community, popular, public, social
4 coarse, hackneyed, inferior, low, pedestrian, plebeian, stale, trite, undistinguished, vulgar
1 abnormal, distinguished, famous, formal, important, infrequent, noble, outstanding, rare, scarce, sophisticated, strange, superior, uncommon, unknown, unpopular, unusual
4 cultured, gentle, refined, sensitive