Mundane novel doesn't even have a title (7)
I believe the answer is:
unnamed
'doesn't even have a title' is the definition.
I can't judge whether this defines the answer.
'mundane novel' is the wordplay.
'novel' indicates an anagram (letters in a new or novel order).
'mundane' with letters rearranged gives 'UNNAMED'.
Can you help me to learn more?
(Other definitions for unnamed that I've seen before include "Anonymous < nark wishes to be ____" , "Not identified in mundane way" , "Without designation" , "Nude man (anag) - not identified" , "anon" .)