wiz·en 
(wĭzən)
(wĭzən)v. wiz·ened, wiz·en·ing, wiz·ens
v.intr.
To dry up; wither or shrivel.
v.tr.
To cause to wither, shrivel, or dry up.
adj.
Shriveled or dried up; withered: "There would be a day when his face would be wrinkled and wizen" (Oscar Wilde).
[Middle English wisenen, from Old English wisnian.]