frailty
nounUK /ˈfreɪlti/
US /ˈfreɪlti/
Frailty is being weak or easily hurt because your body is old or sick.
The old man's frailty made it hard for him to walk up the stairs.
OTHER MEANINGS
2. A small weakness or fault in a person's character.
Greed was his greatest frailty.
3. The condition of being easy to break or damage.
The frailty of the thin glass meant it broke at once.
4. A weakness in an argument or plan that makes it easy to fail.
The frailty of their plan showed when the weather changed.