| incompetence(noun, ability, weakness, skill, lack) |
| incapability(noun, power, ability, weakness, skill) |
| inadequacy(noun, weakness, skill, lack, injury) |
| incapacity(noun, ability, weakness, skill, lack) |
| ineptitude(noun, weakness, skill, lack, rudeness) |
| inefficiency(noun, weakness, skill, lack, failing) |
| ineptness(noun, weakness, skill, lack, rudeness) |
| amateurishness(noun, rudeness, indiscretion, thoughtlessness, vulgarity) |
| clumsiness(noun, rudeness, indiscretion, thoughtlessness, awkwardness) |
| inexperience(noun, disadvantage, stupidity, ignorance, restriction) |
| awkwardness(noun, insensitivity, innocence, incapacity, uselessness) |
| ineffectiveness(noun, weakness, skill, lack, failing) |
| ineffectualness(noun, weakness, skill, lack, failing) |
| ignorance(noun, rudeness, indiscretion, thoughtlessness, vulgarity) |
| inefficacy(noun, weakness, skill, lack, failing) |
| inadequateness(noun, defect, deficiency, inadequacy, shortage) |
| ineffectuality(noun, weakness, hopelessness, helplessness, innocence) |
| maladroitness(noun, rudeness, indiscretion, thoughtlessness, vulgarity) |
| crudeness(noun, rudeness, indiscretion, thoughtlessness, vulgarity) |
| impotence(noun, weakness, skill, failure, lack) |