Synonyms to mediocre

adulterated, airy, attenuate, attenuated, blemished, cut, damaged, defective, deficient, dilute, diluted, erroneous, ethereal, fallible, faulty, fine, flimsy, found wanting, gaseous, immature, impaired, imperfect, imprecise, impure, inaccurate, inadequate, incomplete, inexact, insubstantial, lacking, makeshift, mixed, not perfect, off, partial, patchy, rare, rarefied, reduced, short, sketchy, slight, subtile, subtle, tenuous, thin, thinned, thinned-out, uncompact, uncompressed, undeveloped, uneven, unfinished, unperfected, unsound, unsubstantial, unthorough, vaporous, wanting, watered, watered-down, windy, amateur, Sunday painter, abecedarian, admirer, aesthete, aficionado, amateurish, apprentice, arbiter, arbiter elegantiarum, arbiter of taste, authority, avocational, beginner, bon vivant, booster, buff, bungler, bungling, clumsy, cognoscente, collector, connaisseur, connoisseur, coquet, crank, critic, criticaster, crude, dabbler, dabbling, dabster, dallier, devotee, dilettante, dilettantish, enthusiast, epicure, epicurean, expert, faddist, fan, fancier, flirt, follower, freak, fribble, good judge, gourmand