With respect to novel, it's not be published (3,6)
I believe the answer is:
top secret
'not be published' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'with respect to novel' is the wordplay.
'with' is a charade indicator (letters next to each other).
'novel' is an anagram indicator (letters in a new or novel order).
'respect' next to 'to' is 'respectto'.
'respectto' with letters rearranged gives 'TOP-SECRET'.
'it's' is the link.
Can you help me to learn more?
(Other definitions for top secret that I've seen before include "Highest classified (information)" , "Well-hidden" , "the knack of sleeping well?" , "Like highly guarded information" , "As 007 mission" .)