Hilary —, actress-singer who played Natalie Connors in the 2003 adventure film Agent Cody Banks (4)
I believe the answer is:
duff
(Other definitions for duff that I've seen before include "Homer's so-called favourite tipple" , "Useless -- broken" , "Bad" , "Pudding - of poor quality - Homer Simpson's favourite beer" , "False; steamed pudding" .)