| incompetence(noun, ability, weakness, lack, failing) |
| incapability(noun, ability, weakness, failure, hopelessness) |
| inability(noun, ability, weakness, failure, lack) |
| inadequacy(noun, weakness, failure, lack, defect) |
| incapacity(noun, ability, weakness, lack, failing) |
| disability(noun, disadvantage, restriction, infirmity, frailty) |
| inaptitude(noun, weakness, failure, hopelessness, inability) |
| inefficiency(noun, weakness, failure, lack, failing) |
| ineptitude(noun, weakness, lack, failing, defect) |
| insufficiency(noun, weakness, failure, lack, failing) |
| disqualification(noun, weakness, failure, disadvantage, restriction) |
| impotence(noun, weakness, failure, hopelessness, inability) |
| ineffectiveness(noun, weakness, failure, lack, failing) |
| powerlessness(noun, ability, weakness, failure, hopelessness) |
| weakness(noun, informal, failure, lack, failing) |
| failure(noun, weakness, imperfection, inadequacy, hopelessness) |
| inadequateness(noun, defect, deficiency, imperfection, inadequacy) |
| incapacitation(noun, weakness, failure, exclusion, hopelessness) |
| shortcoming(noun, weakness, failure, lack, failing) |
| unfitness(noun, weakness, lack, failing, defect) |