Good endorsement for pleasure (13)
I believe the answer is:
gratification
'pleasure' is the definition.
(I've seen this before)
'good endorsement' is the wordplay.
I cannot really see how this works, but
'good' could be 'g' (abbreviation) and 'g' is located in the answer.
The remaining letters 'ratification' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for gratification that I've seen before include "Delight" , "giving pleasure" , "Feeling of satisfaction" , "Source of pleasure" .)