Thin, wasted (9)
I believe the answer is:
emaciated
This clue is a double definition.
'thin' is the first definition.
(similar in meaning)
'wasted' is the second definition.
(I know that wasted can be written as emaciated)
(Other definitions for emaciated that I've seen before include "Gaunt from disease or hunger" , "undernourished" , "Abnormally thin and weak" , "Extremely thin" , "Thin from illness or hunger" .)