Novel riled a lazy person (5)
I believe the answer is:
idler
'a lazy person' is the definition.
(I've seen this before)
'novel riled' is the wordplay.
'novel' is an anagram indicator.
'riled' anagrammed gives 'IDLER'.
(Other definitions for idler that I've seen before include "One does little" , "stationary car perhaps?" , "papers" , "One who loafs about" , "bad worker" .)