Undressed (8)
I believe the answer is:
stripped
'undressed' is the definition.
('strip' can be a synonym of 'undress')
This is the entire clue.
(Other definitions for stripped that I've seen before include "behaved 'naughtily' in club?" , "Removed clothing, perhaps forpay" , "Undressed" , "having no gear" , "Pets drip (anag)" .)