| ill health(noun, expression, disorder, weakness, fault) |
| imperfection(noun, disorder, weakness, fault, illness) |
| incapacitation(noun, weakness, hopelessness, inability, helplessness) |
| ineffectualness(noun, weakness, hopelessness, inability, helplessness) |
| inefficacy(noun, weakness, hopelessness, inability, helplessness) |
| ineptness(noun, weakness, hopelessness, inability, helplessness) |
| lameness(noun, weakness, shakiness, fragility, thinness) |
| laxity(noun, weak, sick, unhealthy) |
| malady(noun, disorder, weakness, fault, illness) |
| old age(noun, expression, decline, weakness, period) |
| paleness(noun, weakness) |
| ricketiness(noun, weakness, fragility) |
| second childhood(noun, expression, decline, weakness, age) |
| shortcoming(noun, disorder, weakness, fault, illness) |
| tiredness(noun, weakness, fatigue, weariness, sleepiness) |
| unfitness(noun, weakness, hopelessness, inability, helplessness) |
| unhealthiness(noun, disorder, weakness, fault, illness) |
| Achilles heel(noun, expression, weakness, fault, lack) |
| abulia |
| adynamia(noun, weak, sick, unhealthy) |