Antonyms for rare

exceptional, infrequent:

well-done, regular, ordinary, frequent, typical, normal, Familiar, worthless, commonplace, cheap, standard, usual, sufficient, common.

precious, excellent:

weak, poor, serious.

noun:

daily, rough, lowbrow, run-of-the-mine, unpolished, kitschy, commercial, substandard, low-grade, thick, tasteless, gross, kitsch, mediocre, inferior, unrefined, uncultured, second-rate, public, mass-produced, raffish, unsatisfactory, cooked, wanting, uncultivated, lesser, universal, coarse, plain, natural, prevailing, predictable, expected, routine, general, accustomed, prevalent, deficient, unacceptable, vulgar, wonted.