| inability(noun, power, ability, weakness, skill) |
| incompetence(noun, ability, weakness, skill, failure) |
| incapacity(noun, ability, weakness, skill, failure) |
| inadequacy(noun, state, strong, weakness, condition) |
| inefficiency(noun, weakness, skill, failure, shortcoming) |
| ineptitude(noun, weakness, skill, failure, shortcoming) |
| ineffectiveness(noun, state, strong, weakness, condition) |
| ineptness(noun, weakness, skill, failure, shortcoming) |
| inefficacy(noun, state, strong, weakness, condition) |
| ineffectuality(noun, state, strong, weakness, condition) |
| ineffectualness(noun, state, strong, weakness, condition) |
| amateurishness(noun, stupidity, ignorance, inability, innocence) |
| impotence(noun, state, strong, weakness, condition) |
| maladroitness(noun, innocence) |
| unfitness(noun, weakness, skill, failure, shortcoming) |
| disability(noun, injury, inability, impotence, incapacity) |
| disqualification(noun, weakness, skill, failure, injury) |
| powerlessness(noun, state, strong, power, ability) |
| incompetency(noun, ability, weakness, failure, hopelessness) |
| feebleness(noun, weakness, hopelessness, inability, impotence) |