Complete Black Beauty , say, without first initial (7)
I believe the answer is:
endorse
'initial' is the definition.
(thesaurus)
'complete black beauty say without' is the wordplay.
I cannot really understand how this works, but
'complete' could be 'do' (doing is a kind of completing) and 'do' is found within the answer.
This explanation may well be incorrect...
'first' is the link.
Can you help me to learn more?
(Other definitions for endorse that I've seen before include "Advocate" , "Give support or approval to" , "Give backing to" , "'Approve of, back (7)'" , "No reeds (anag)" .)