powerlessness

frailty impotence inadequacy

disqualification failure inaptitude incapability incapacity incompetence incompetency ineffectiveness ineffectualness inefficacy inefficiency ineptitude ineptness insufficiency inutility lack necessity shortcoming unfitness weakness

incapacitation

strong point success

helplessness impotence inadequacy

feebleness incapability ineffectiveness ineffectualness inefficacy infirmity uselessness

soundness strength