Weak, delicate (5)
I believe the answer is:
frail
This clue is a double definition.
'weak' is the first definition.
(I know that weak can be written as frail)
'delicate' is the second definition.
(I know that delicate can be written as frail)
(Other definitions for frail that I've seen before include "Decrepit" , "Physically weak, delicate" , "Easily destroyed" , "Physically feeble" , "American woman" .)