Shrunken means made smaller by drying or by age. A shrunken face, shrunken jumper, shrunken and frail.
It is the old past participle of shrink and it survives as an adjective where shrunk does the verb's work — a jumper has shrunk and is shrunken. Of a person it suggests age and loss. Note pre-shrunk fabric, which has been shrunk deliberately before sale so it will not do it again.
1adjectiveshrunkenMade smaller by drying or by age.
“The old apples in the cellar were shrunken and wrinkled.”
shrunken is a quality of reduction.