Hit book has extraordinary editor (6)
I believe the answer is:
bashed
'hit' is the definition.
(I've seen this before)
'book has extraordinary editor' is the wordplay.
'book' becomes 'b'.
'extraordinary' is an anagram indicator.
'editor' becomes 'ed'.
'has' anagrammed gives 'ash'.
'b'+'ash'+'ed'='BASHED'
(Other definitions for bashed that I've seen before include "Hit hard" , "Struck violently" .)