Synonyms:
infirmity, frailty, debility, feebleness, frailness, valetudinarianism
Meaning: the state of being weak in health or body (especially from old age)
Usage examples
It is yet a higher speech of his, than the other (much too high for a heathen), It is true greatness, to have in one the frailty of a man, and the security of a God.
Yes, and does sing them! What should we do without her gentle, loving presence, whose frailty calls forth our tenderest affections and whose sweet face makes sunshine in the shadiest places!