Synonyms and related words :
ad lib, baseness, deficiency, disability, disablement, disqualification, extemporaneousness, failure, falling short, faultiness, fewness, imbecility, imperfection, improvisation, inability, inadeptness, inadequacy, inadequateness, inaptitude, inaptness, inattentiveness, incapability, incapacitation, incapacity, incompetency, indexterity, ineffectiveness, ineffectuality, inefficiency, ineptitude, ineptness, infancy, inferiority, insufficiency, insufficientness, lack of preparation, legal incapacity, littleness, maladjustment, maladroitness, meanness, mediocrity, minority, none to spare, nonfulfillment, nonpreparation, nonpreparedness, nonsatisfaction, pedestrianism, pettiness, planlessness, rustiness, shabbiness, short supply, skill-lessness, smallness, subnormality, thoughtlessness, too late, too little, triviality, unaptness, uncleverness, undeftness, undexterousness, undextrousness, unfitness, unfittedness, unintelligence, unpreparedness, unproficiency, unqualification, unqualifiedness, unreadiness, unschooledness, unskillfulness, unsuitability, unsuitableness, unsuitedness, untrainedness, uselessness, vulgarity, vulnerability, wardship