Another word for inadequate
lacking, deficient, scanty, short, meager, failing, found wanting, unequal, not enough, sparing, stinted, stunted, feeble, sparse, too little, falling short, small, thin, incomplete, inappreciable, inconsiderable, spare, bare, parsimonious, niggardly, miserly, scarce, unsubstantial, barren, depleted, low, weak, flaccid, impotent, unproductive, dry, sterile, jejune, imperfect, defective, lame, sorry, pathetic, pitiful, exiguous, skimpy*, shy*, at low-water mark*; see also faulty, poor 2, unsatisfactory, wanting 1.
Another word for inadequateadjective
Not enough to meet a demand or requirement:deficient, insufficient, scarce, short, shy1, under, wanting. See big, excess
Lacking capability:incapable, incompetent, unequal, unfit, unqualified. See ability, excess
Not capable of accomplishing anything:helpless, impotent, incapable, ineffectual, powerless, weak. See ability, strong