Synonyms and related words :
adulterated, amidships, artless, average, bad, banal, base, betwixt and between, blemished, central, common, commonplace, core, damaged, defective, deficient, dull, equatorial, equidistant, erroneous, everyday, fair, fair to middling, fairish, fallible, faulty, found wanting, garden-variety, half-assed, halfway, immature, impaired, imperfect, imprecise, impure, inaccurate, inadept, inadequate, inapt, inattentive, incompetent, incomplete, indifferent, inefficient, inept, inexact, inexpert, inferior, insipid, insufficient, interior, intermediary, intermediate, lacking, lackluster, little, makeshift, maladroit, mean, medial, median, mediterranean, medium, mesial, mezzo, mid, middle, middle-of-the-road, middlemost, middling, midland, midmost, midships, midway, mixed, moderate, modest, namby-pamby, no great shakes, normal, not bad, not comparable, not in it, not perfect, nuclear, of a kind, of a sort, of sorts, off, ordinary, out of it, partial, passable, patchy, pedestrian, petty, poor, respectable, routine, run-of-the-mill, second-rate, shabby, short, sketchy, skill-less, small, so so, so-so, standard, tedious, third-rate, thoughtless, tolerable, trivial, unapt, undeft, undeveloped, undexterous, undextrous, undistinguished, uneven, unexceptional, unfacile, unfinished, unimaginative, uninspired, unintelligent, unperfected, unproficient, unskillful, unsound, unthorough, usual, vapid, wanting, wishy-washy