Synonyms and related words :
adulterated, arrested, asymmetric, barren, base, blemished, bootless, callow, counterproductive, damaged, defective, deficient, disappointing, disheartening, disparate, displeasing, disproportionate, dissatisfactory, effete, emasculate, embryonic, empty, erroneous, etiolated, failing, fallible, fatuitous, fatuous, faulty, feckless, forceless, found wanting, fruitless, futile, half-assed, hypoplastic, ill-matched, ill-qualified, ill-sorted, immature, impaired, imperfect, impotent, imprecise, impure, in arrear, in arrears, in default, in short supply, inaccurate, inane, inappreciable, incapable, incommensurate, incompetent, incomplete, inconsiderable, ineffective, ineffectual, inefficacious, inexact, infant, inferior, inoperative, insufficient, invalid, invertebrate, irregular, lacking, little, makeshift, maladjusted, maladroit, mean, mediocre, minus, mismatched, missing, mixed, needing, not comparable, not enough, not equal to, not good enough, not in it, not perfect, not up to, nugacious, nugatory, odd, of no force, off, out of it, out of proportion, part, partial, patchy, petty, scant, scanty, scarce, scrappy, scrimpy, shabby, short, short of, shy, sketchy, skew, skewed, skimpy, small, spineless, sterile, too little, trivial, unable, unadapted, unadjusted, unavailing, underdeveloped, undeveloped, unequal, unequal to, unequipped, uneven, unfinished, unfit, unfitted, unfulfilling, ungratifying, unperfected, unqualified, unreached, unsatisfactory, unsatisfying, unskillful, unsound, unsufficing, unthorough, useless, vain, wanting, weak