Soul beat wild and perfect (8)
I believe the answer is:
absolute
'perfect' is the definition.
(synonyms)
'soul beat wild' is the wordplay.
'wild' indicates an anagram.
'soul'+'beat'='soulbeat'
'soulbeat' anagrammed gives 'ABSOLUTE'.
'and' acts as a link.
(Other definitions for absolute that I've seen before include "sure" , "Complete and unrestricted, say power" , "Sheer, utter or not limited" , "Complete, full" , "rank" .)