| malady(noun, disorder, disease, weakness, fault) |
| powerlessness(noun, weakness, fault, lack, lapse) |
| second childhood(noun, expression, idiom, age) |
| sickness(noun, disorder, disease, weakness, condition) |
| superannuation(noun, age) |
| unsoundness(noun, strong, disorder, weakness, condition) |
| weak point(noun, expression, difficulty, weakness, fault) |
| weakliness(noun, strong, weakness, condition, failing) |
| affection(noun, disorder, disease, illness, defect) |
| attack(noun, disorder, disease, illness, defect) |
| blight(decline, disorder, collapse, deterioration, defect) |
| breakdown(noun, decline, disorder, ruin, disease) |
| bug(noun, disorder, disease, illness, sickness) |
| climacteric(adjective, age) |
| complaint(noun, disorder, disease, illness, sickness) |
| decadence(decline, ruin, collapse, failing, deterioration) |
| defect(noun, disorder, weakness, fault, illness) |
| disability(noun, disease, weakness, illness, sickness) |
| exhaustion(noun, weakness, delicacy, inadequacy, languor) |
| failing(noun, drop, decline, disorder, fall) |