Fearless one printed novel (8)
I believe the answer is:
intrepid
'fearless' is the definition.
(synonyms)
'one printed novel' is the wordplay.
'one' becomes 'i' (Roman numeral).
'novel' is an anagram indicator (letters in a new or novel order).
'printed' is an anagram of 'ntrepid'.
'i'+'ntrepid'='INTREPID'
(Other definitions for intrepid that I've seen before include "Fearlessly adventurous" , "Brave and fearless" , "Bold" , "Audacious" , "I printed this way, being daring" .)