Elaborate hindquarters indeed (8)
I believe the answer is:
detailed
'elaborate' is the definition.
(I know that elaborate can be written as detailed)
'hindquarters indeed' is the wordplay.
I cannot really understand how this works, but
'hindquarters' could be 'tail' (synonyms) and 'tail' is found within the answer.
The remaining letters 'deed' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for detailed that I've seen before include "Comprehensive" , "Exhaustive" , "Elaborate" , "Minutely described" , "Showing attention to fine features" .)