Bare, unclothed (4)
I believe the answer is:
nude
This clue is a double definition.
'bare' is the first definition.
(I know that bare can be written as nude)
'unclothed' is the second definition.
(similar in meaning)
(Other definitions for nude that I've seen before include "rejecting coverage?" , "The Thinker, maybe" , "Wearing one's birthday suit" , "example of erotic art" , "In the buff" .)