Sharper novel contains English word again (8)
I believe the answer is:
rephrase
'word again' is the definition.
('phrase' can be a synonym for 'word' so perhaps 'rephrase' is OK for 'word again')
'sharper novel contains english' is the wordplay.
'novel' is an anagram indicator (letters in a new or novel order).
'contains' indicates putting letters inside.
'english' becomes 'e' (abbreviation).
'sharper' is an anagram of 'rphrase'.
'rphrase' going around 'e' is 'REPHRASE'.
(Other definitions for rephrase that I've seen before include "express in another way" , "Write in a different way" , "Say again in different words" , "Express differently" , "Express in different words" .)