unsubstantiality

affliction ailing ailment confinement debilitation debility decay decrepitude defect deficiency delicacy delicateness disease diseasedness disorder failing fault feebleness flimsiness flu fragileness fragility frailness frailty ill health imperfection indisposition insubstantiality malady malaise puniness shortcoming sickliness unhealth unhealthiness unsoundness unwellness vulnerability weakliness weakness