Survive to the final (4)
I believe the answer is:
last
This clue is a double definition.
'survive' is the first definition.
(I know that survive can be written as last)
'the final' is the second definition.
(synonyms)
'to' acts as a link.
(Other definitions for last that I've seen before include "model for a leprechaun" , "Endure - this clue is!" , "Rearmost" , "` `Let the cobbler stick to his ....' '" , "Continue" .)