Final or absolute (8)
I believe the answer is:
ultimate
I believe this clue is a double definition.
'final' is the first definition.
(I know that final can be written as ultimate)
'absolute' is the second definition.
(thesaurus)
(Other definitions for ultimate that I've seen before include "Happening last" , "Last possible, final" , "The final point" , "Last or highest" , "Best or most extreme" .)