| languor(noun, weakness, fault, lack, lapse) |
| prostration(noun, weakness, fault, lack, lapse) |
| sickliness(noun, feebleness) |
| unfitness(noun, weakness, skill, failure, shortcoming) |
| Achilles heel(noun, expression, weakness, fault, lack) |
| appetite(noun, weakness, fault, lack, lapse) |
| blemish(noun, weakness, fault, lack, lapse) |
| chink in armor(noun, expression, idiom, weakness, fault) |
| delicacy(noun, weakness, fault, lack, lapse) |
| disqualification(noun, weakness, skill, failure, injury) |
| fault(noun, weakness, lack, lapse, failing) |
| flimsiness(noun, feebleness) |
| fondness(noun, weakness, fault, lack, lapse) |
| gap(noun, weakness, fault, lack, lapse) |
| impairment(noun, weakness, fault, lack, lapse) |
| imperfection(noun, weakness, fault, lack, lapse) |
| impuissance |
| inaptitude(noun, weakness, skill, failure, shortcoming) |
| inclination(noun, weakness, fault, lack, lapse) |
| incompetent |