Deficient(a.) Not having an adequate supply or amount; wanting, to make up completeness; wanting, as regards a requirement; not sufficient; inadequate; defective; imperfect; incomplete; lacking; as, deficient parts; deficient estate; deficient strength; deficient in judgment.
Thesaurus Entries
adulterated, amiss, arrested, bad, base, blemished, botched, bungling, callow, clumsy, damaged, defective, embryonic, erroneous, failing, fallible, faulty, flawed, found wanting, half-assed, haphazard, hit-and-miss, hit-or-miss, hypoplastic, immature, impaired, imperfect, imprecise, impure, in arrear, in arrears, in default, in short supply, in want of, inaccurate, inadequate, incompetent, incomplete, inexact, infant, inferior, infrequent, injured, insufficient, lacking, little, makeshift, maladroit, marred, mean, mediocre, messy, minus, missing, mixed, needing, not comparable, not enough, not in it, not perfect, off, out of it, part, partial, patchy, petty, promiscuous, rare, scant, scanty, scarce, scrappy, scrimpy, shabby, short, short of, shy, sketchy, skimpy, slipshod, slipshoddy, sloppy, slovenly, sluttish, small, too little, trivial, uncommon, underdeveloped, undeveloped, unequal to, uneven, unfinished, unperfected, unqualified, unreached, unsatisfactory, unsatisfying, unskillful, unsound, unsufficing, unthorough, untidy, wanting