inadequacy — Also, inadequateness [in-ad-i-kwit-nis] /ɪnˈæd ɪ kwɪt nɪs/ (Show IPA). the state or condition of being inadequate; insufficiency.
ineffectiveness — not effective; not producing results; ineffectual: ineffective efforts; ineffective remedies.
failure — an act or instance of failing or proving unsuccessful; lack of success: His effort ended in failure. The campaign was a failure.
idleness — the quality, state, or condition of being lazy, inactive, or idle: His lack of interest in the larger world and his consummate idleness were the causes of their dreadful divorce.
impotence — the condition or quality of being impotent; weakness.
inability — lack of ability; lack of power, capacity, or means: his inability to make decisions.
ineptness — without skill or aptitude for a particular task or assignment; maladroit: He is inept at mechanical tasks. She is inept at dealing with people.
disability — lack of adequate power, strength, or physical or mental ability; incapacity.
lack — something missing or needed: After he left, they really felt the lack.
helplessness — unable to help oneself; weak or dependent: a helpless invalid.
distrust — to regard with doubt or suspicion; have no trust in.
freedom — the state of being free or at liberty rather than in confinement or under physical restraint: He won his freedom after a retrial.
immaturity — a state or condition of being immature: the immaturity of one's behavior; the immaturity of a country's technology.
immunity — the state of being immune from or insusceptible to a particular disease or the like.
irresponsibility — said, done, or characterized by a lack of a sense of responsibility: His refusal to work shows him to be completely irresponsible.