More willing to give up the struggle and back out (7)
I believe the answer is:
readier
'more willing' is the definition.
('ready' can be similar in meaning to 'willing')
'up the struggle and back out' is the wordplay.
'up the struggle' becomes 'dier' (I am not sure about this - if you are sure you should believe this answer much more).
'and' is a charade indicator (letters next to each other).
'back' becomes 'rear' (something's rear is its back).
'out' means to remove the last letter.
'rear' with its final letter taken away is 'rea'.
'dier' after 'rea' is 'READIER'.
'to give' acts as a link.
Can you help me to learn more?
(Other definitions for readier that I've seen before include "More prepared" , "More willing" , "more immediately available" .)