Nude appears in cabaret (4)
I believe the answer is:
bare
'nude' is the definition.
(synonyms)
'in cabaret' is the wordplay.
'in' indicates the answer is hidden within the clue.
'BARE' is hidden within 'cabaret'.
'appears' acts as a link.
(Other definitions for bare that I've seen before include "Without protective covering" , "Naked or empty" , "Not clothed" , "Stark - naked" , "Uncovered - unfurnished - unadorned" .)