Irate novel makes startling exposure (10)
I believe the answer is:
revelation
'startling exposure' is the definition.
'revelation' can be an answer for 'exposure' (thesaurus). I'm not sure about the 'startling' bit.
'irate novel makes' is the wordplay.
'makes' is an anagram indicator.
'irate'+'novel'='iratenovel'
'iratenovel' with letters rearranged gives 'REVELATION'.
Can you help me to learn more?
(Other definitions for revelation that I've seen before include "Extraordinary event" , "NT book" , "Suprising disclosure" , "The last book to give clergyman" , "telling statement" .)