delicate
pitiful
fragile(breakable, brittle)
You must cushion fragile objects carefully when you pack them.
emaciate
A long illness had emaciated my father.
emaciated(skinny; haggard)
A bus transported the emaciated refugees to the camp.
flimsy(thin)
fragmentary(discontinuous)
frail(fragile, flimsy)
My grandmother is frail, but she's still very alert.
brittle(fragile)
Steel is not as brittle as cast iron; it doesn't break as easily.
slender(slim)
impotence(powerlessness)
limp