absence, adulteration, arrearage, arrestment, baseness, beggary, blemish, break, bug, callowness, catch, crack, dearth, defalcation, default, defect, defectibility, defection, defectiveness, deficit, demerit, deprivation, dereliction, destitution, discontinuity, drawback, drought, erroneousness, failing, failure, fallibility, famine, fault, faultiness, faute, fewness, flaw, foible, frailty, gap, hiatus, hole, immaturity, impairment, imperfection, impoverishment, impurity, inaccuracy, inadequacy, inadequateness, incompetence, incompleteness, incompletion, inexactitude, inexactness, infirmity, insufficiency, interval, kink, lack, lacuna, little problem, littleness, maladroitness, meanness, mediocrity, miscarriage, missing link, need, neglect, omission, outage, patchiness, pettiness, privation, problem, rift, scantiness, scrappiness, shabbiness, short measure, short weight, shortage, shortcoming, shortfall, sin, sketchiness, smallness, snag, something missing, starvation, subnormality, taint, triviality, ullage, underage, underdevelopment, undevelopment, unevenness, unperfectedness, unskillfulness, unsoundness, vulgarity, vulnerable place, want, wantage, weak link, weak point, weakness