Block rogue editor and be without book (6)
I believe the answer is:
impede
'block' is the definition.
('impede' can be a synonym of 'block')
'rogue editor and be without book' is the wordplay.
'rogue' becomes 'imp' (**).
'editor' becomes 'ed'.
'and' says to put letters next to each other.
'without' is a deletion indicator.
'book' becomes 'b'.
'be' with 'b' removed is 'e'.
'imp'+'ed'+'e'='IMPEDE'
(Other definitions for impede that I've seen before include "Handicap" , "Hamper" , "Hinder, form an obstacle to" , "Slow" , "Interfere with progress" .)