Shrivelled, dried up (7)
I believe the answer is:
I believe this clue is a double definition.
'shrivelled' is the first definition.
(I've seen this before)
'dried up' is the second definition.
(I've seen this in another clue)
(Other definitions for wizened that I've seen before include "Old, dry, and shrivelled" , "Dry and shrivelled with age" , "Wrinkled and shrunken through age" , "Dried up" .)