Novelist's out of order (5)
I believe the answer is:
amiss
'out of order' is the definition.
(synonyms)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for amiss that I've seen before include "Wrong (a girl!)" , "Badly - wrong" , "Wrorg" , "error" , "Faulty" .)