Redoubt rebuilt to be more prominent (7)
I believe the answer is:
obtrude
'to be more prominent' is the definition.
'redoubt rebuilt' is the wordplay.
'rebuilt' indicates an anagram.
'redoubt' is an anagram of 'OBTRUDE'.
(Other definitions for obtrude that I've seen before include "Impose or force (something) on someone" , "Thrust oneself forward" , "Push oneself in an unwelcome way" , "Stick out from redoubt" , "Stick out unpleasantly" .)