Nameless drunk now needs clothes (7)
I believe the answer is:
unknown
'nameless' is the definition.
(I know that nameless can be written as unknown)
'drunk now needs clothes' is the wordplay.
'clothes' says the answer is hidden in the clue (the letters clothe the hidden word).
'UNKNOWN' is hidden within 'drunk now needs'.
(Other definitions for unknown that I've seen before include "Not familiar" , "Not identified" , "Obscure, unheard-of, nameless" , "Unidentified, strange" , "x, y or z, possibly" .)