Yield to wild decadence without end (6)
I believe the answer is:
accede
'yield' is the definition.
(I've seen this before)
'wild decadence without end' is the wordplay.
'wild' indicates an anagram.
'without' is a deletion indicator.
'decadence' with 'end' removed is 'cadece'.
'cadece' with letters rearranged gives 'ACCEDE'.
'to' acts as a link.
(Other definitions for accede that I've seen before include "bow" , "Assume" , "Assent, to a demand say" , "Comply" , "'Acquiesce, defer (6)'" .)