| senility(noun, weakness, delicacy, inadequacy, shakiness) |
| shortcoming(noun, disorder, weakness, fault, illness) |
| sick(noun, weak, disease, ill) |
| sicklier |
| sickly |
| spasm(noun, disease) |
| spell(noun, disorder, illness, defect, sickness) |
| stroke(noun, disorder, illness, defect, sickness) |
| symptom(noun, disease) |
| temperature(noun, disorder, illness, defect, sickness) |
| unhealth(noun, disorder, weakness, fault, illness) |
| unhealthy pale appearance(noun, entity, condition, color, paleness) |
| unnatural lack of color in the skin(noun, entity, condition, color, paleness) |
| unnatural paleness(noun, entity, condition, color, paleness) |
| unsoundness(noun, disorder, weakness, failing, affliction) |
| unwellness(noun, disorder, weakness, fault, illness) |
| upset(noun, disorder, illness, defect, sickness) |
| valetudinarianism |
| visitation(noun, disorder, illness, defect, sickness) |
| vulnerability(noun, disorder, weakness, fault, illness) |