adjective
common, normal
Synonyms: accepted, accustomed, button-down, commonplace, correct, current, customary, decorous, everyday, expected, fashionable, formal, general, habitual, in established usage, ordinary, orthodox, plain, popular, predominant, prevailing, prevalent, proper, regular, ritual, routine, square, standard, stereotyped, straight, traditional, tralatitious, typical, usual, well-known, wonted
Antonyms: abnormal, exotic, foreign, irregular, strange, uncommon, unconventional, uncustomary, unusual
adjective
unoriginal
Synonyms: bigoted, bourgeois, commonplace, conforming, conservative, demure, doctrinal, dogmatic, drippy, hackneyed, hidebound, humdrum, illiberal, inflexible, in rut, insular, isolationist, lame, literal, moderate, moral, narrow, narrow-minded, not heretical, obstinate, parochial, pedestrian, prosaic, puritanical, rigid, routine, rube, run-of-the-mill, sober, solemn, square, stereotyped, straight, straight-laced, strict, stuffy, uptight
Antonyms: different, exotic, foreign, new, original, strange, unique