Generous bribe failing to retain All Blacks (5)
I believe the answer is:
noble
'generous' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for noble that I've seen before include "eg Earl" , "aristocrat, maybe" , "Former gold coin" , "Magnificent old coin" , "Having high moral qualities" .)