Synonyms of commonest

1 Syllable
plain, stock
2 Syllables
prosaic, trite, simple, trivial, casual, worn-out, daily, standard, banal, current, usual, humdrum, bourgeois, frequent, hackneyed, stale
3 Syllables
general, prevailing, routine, typical, regular, mediocre, unvaried, workaday, habitual, natural, probable, familiar, informal, colloquial, accepted, prevalent, homely, passable
4 Syllables
commonplace, universal, customary, comformable, conventional, monotonous, wearisome, everyday, stereotyped, run-of-the-mill
5 Syllables
undistinguished, characteristic