Hated fancy curtains (5)
I believe the answer is:
death
'curtains' is the definition.
(I've seen this before)
'hated fancy' is the wordplay.
'fancy' indicates anagramming the letters.
'hated' anagrammed gives 'DEATH'.
(Other definitions for death that I've seen before include "Hated (anag) - curtains (informal)" , "Last moment of existence" , ""The last enemy"" , "The end - after 13 across, the plague" , "Distribute; wood" .)